Upload
ferenc-schmidt
View
433
Download
27
Embed Size (px)
Citation preview
LG Room Air ConditionerSERVICE MANUAL
LG
MODELS: ASNW096F1G0ASNW096FE/V/GG0ASUW096FUG0ASNW126F1G0ASNW126FE/V/GG0ASUW126FUG0
CAUTION
website http://www.lgservice.com
• BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
• ONLY FOR AUTHORIZED SERVICE PERSONNEL.
2 Room Air Conditioner
Air Conditioner Service Manual
TABLE OF CONTENTS
LG Model Name.................................................................................................................................3
Safety Precautions ...........................................................................................................................4
Dimensions .....................................................................................................................................10
Installation.......................................................................................................................................12
Flaring work and connection of piping.........................................................................................15
Checking the drainage and forming the pipings .........................................................................18
Air purging ......................................................................................................................................19
Test running ....................................................................................................................................22
Functions.........................................................................................................................................23
Operation.........................................................................................................................................27
Disassembly ....................................................................................................................................40
Troubleshooting Guide ..................................................................................................................42
Schematic Diagram ........................................................................................................................62
Product Specifications ..................................................................................................................68
Exploded View ................................................................................................................................69
Replacement Parts List ..................................................................................................................71
Service Manual 3
LG Model Name
LG Model Name2006
1 2 - 3 4 5 6 7 8 9 10
Code Type Code of Model Meaning
1 Producing Center, A~Z L: Chang-won R22 N: IndiaRefrigerant A: Chang-won R410A Z: Brazil
C: Chang-won R407C D: IndonesiaT: China M: MexicoK: Turkey R22 V: VietnamE: Turkey R410A S: Out SourcingH: Thailand
2 Product Type A~Z S: Split Type Air Conditioner
3 Cooling/Heating/Inverter A~Z C: Cooling onlyH: Heat pumpX: C/O + E/HeaterZ: H/P + E/Heater
V: AC Inverter C/ON: AC Inverter H/PQ: DC Inverter C/OW: DC Inverter H/P
4, 5 Capacity 0~9 Cooling/Heating CapacityEx. "09" →9,000 Btu/h
6 Electric Range 1~9 1: 115V/60Hz, A: 220V, 50Hz, 3PhaseA~Z 2: 220V/60Hz B: 208~230V, 60Hz, 3Phase
3: 208-230V/60Hz C: 575V, 50Hz, 3Phase5: 200-220V/50Hz D: 440~460, 60Hz, 3Phase6: 220-240V/50Hz E: 265V, 60Hz7: 110V, 50/60Hz F: 200V, 50/60Hz8: 380-415V/50Hz9: 380-415V/60Hz
7 Chassis A~Z Name of Chassis of Unit
8 Look A~Z Look,Color (Artcool Model)
9 Function A~Z
10 Serial No. 0~9 LG Model De
* ARTCOOL COLOR (SF)
velopment Serial No.
Basic ABasic+4Way BPlasma Filter CPlasma Filter+4 Way DTele+LCD ETele+LCD+Nano plasma+4Way FNano Plasma F+(A/changeove)+A/clean+Low A GNano Plasma F+(A/changeove)+A/clean+4way+Low A HTele+LED+4way IInternet JPlasma F+4Way+Oxy generator KNano Plasma F+(A/changeove)+A/clean LNano Plasma F+(A/changeove)+A/clean+4way MNano Plasma F+(A/changeove)+A/clean+PTC NNano Plasma F+(A/changeove)+Autoclean+4way+PTC PNano Plasma F+(A/changeove)+A/clean+4way+Low A+PTC QNegative ION+A/Clean R(Nano)Plasma+Negative ION+A/Clean S4way+(Nano)Plasma F+Negative ION+Healthy dehumidification+A/Clean TNano Plasma F+4Way+(A/changeove)+A/clean+ U
1 KissE RedV SilverG Gold
Ex.F → SF Chassis
4 Room Air Conditioner
Safety Precautions
Safety Precautions
To prevent injury to the user or other people and property damage, the following instructions mustbe followed. Incorrect operation due to ignoring instruction will cause harm or damage. The seriousness is
classified by the following indications.
Meanings of symbols used in this manual are as shown below.
This symbol indicates the possibility of death or serious injury.
This symbol indicates the possibility of injury or damage to properties only.
Be sure not to do.
Be sure to follow the instruction.
Installation
Do not use damaged powercords, plugs, or a loose sock-et.
• There is risk of fire or electricshock.
For electrical work, contactthe dealer, seller, a qualifiedelectrician, or an AuthorizedService Center.
• There is risk of fire or electricshock.
Always use the power plugand socket with the groundterminal.
• There is risk of electric shock.
Install the panel and the coverof control box securely.
• There is risk of fire or electricshock.
Do not modify or extend thepower cord.
• There is risk of fire or electricshock.
Do not install, remove, or re-install the unit by yourself(customer).
• There is risk of fire, electricshock, explosion, or injury.
Service Manual 5
Safety Precautions
Operation
Be cautious when unpackingand installing the product.
• Sharp edges could cause injury.Be especially careful of the caseedges and the fins on the con-denser and evaporator.
For installation, always con-tact the dealer or anAuthorized Service Center.
• There is risk of fire, electricshock, explosion, or injury.
Do not install the product on adefective installation stand.
• It may cause injury, accident, ordamage to the product.
Be sure the installation areadoes not deteriorate with age.
• If the base collapses, the airconditioner could fall with it,causing property damage, prod-uct failure, and personal injury.
Do not let the air conditionerrun for a long time when thehumidity is very high and adoor or a window is left open.
• Moisture may condense and wetor damage furnishings.
Take care to ensure thatpower cords could not bepulled out or damaged duringoperation.
• There is risk of fire or electricalshock.
Do not place anything on thepower cord.
• There is risk of fire or electricshock.
Do not turn the air-conditionerON or OFF by plugging orunplugging the power plug.
• There is risk of fire or electricalshock.
6 Room Air Conditioner
Safety Precautions
Use a dedicated outlet for thisappliance.
• There is risk of fire or electricalshock.
Grasp the plug to remove thecord from the outlet. Do nottouch it with wet hands.
• There is risk of fire or electricalshock.
Do not place a heater or otherappliances near the powercable.
• There is risk of fire and electricshock.
Do not allow water to run intoelectric parts.
• It may cause There is risk offire, failure of the product, orelectric shock.
Do not store or use flammablegas or combustibles near theair conditioner.
• There is risk of fire or failure ofproduct.
Do not use the product in atightly closed space for a longtime.
• Oxygen deficiency could occur.
Wax Thinner
When flammable gas leaks,turn off the gas and open awindow for ventilation beforeturn the product on. DO NOTuse the telephone or turnswitches on or off.
• There is risk of explosion or fire.
Unplug the unit if strangesounds, odors, or smokecomes from it.
• There is risk of electrical shockor fire
Stop operation and close thewindow in storm or hurricane.If possible, remove the airconditioner from the windowbefore the hurricane arrives.
• There is risk of property dam-age, failure of product, or elec-tric shock.
Service Manual 7
Safety Precautions
Installation
Do not open the inlet grill ofthe product during operation.(Do not touch the electrostaticfilter, if the unit is soequipped.)
• There is risk of physical injury,electric shock, or product failure.
When the product is soaked(flooded or submerged), con-tact an Authorized ServiceCenter.
• There is risk of fire or eletricshock.
Ventilate the product fromtime to time when operating ittogether with a stove, etc.
• There is risk of fire or electricalshock.
Unplug the appliance beforeperforming cleaning or main-tenance.
• There is risk of electrical shock.
When the product is not beused for a long time, disconnectthe power supply plug or turnoff the breaker.
• There is risk of product damageor failure, or unintended opera-tion.
Take care to ensure thatnobody could step on or fallonto the outdoor unit.
• This could result in personalinjury and product damage.
Always check for gas (refriger-ant) leakage after installationor repair of product.
• Low refrigerant levels maycause failure of product.
Install the drain hose toensure that water is drainedaway properly.
• A bad connection may causewater leakage.
Keep level even wheninstalling the product.
• To avoid vibration or water leak-age.
90˚
8 Room Air Conditioner
Safety Precautions
Operation
Do not install the productwhere the noise or hot airfrom the outdoor unit coulddamage the neighborhoods.
• It may cause a problem for yourneighbors.
Use two or more people to liftand transport the air condi-tioner.
• Avoid personal injury.
Do not install the productwhere it will be exposed tosea wind (salt spray) directly.
• It may cause corrosion on theproduct. Corrosion, particularlyon the condenser and evapora-tor fins, could cause productmalfunction or inefficient opera-tion.
Do not direct airflow at roomoccupants. (Don't sit in thedraft.)
• This could damage your health.
Do not use the product forspecial purposes, such aspreserving foods, works ofart, etc. It is a consumer airconditioner, not a precisionrefrigeration system.
• There is risk of damage or lossof property.
Do not block the inlet or outletof air flow.
• It may cause product failure.
Use a soft cloth to clean. Donot use harsh detergents, sol-vents, etc.
• There is risk of fire, electricshock, or damage to the plasticparts of the product.
Do not touch the metal partsof the product when removingthe air filter. They are verysharp!
• There is risk of personal injury.
Do not step on or put anytingon the product. (outdoorunits)
• There is risk of personal injuryand failure of product.
Service Manual 9
Safety Precautions
Always insert the filter secure-ly. Clean the filter every twoweeks or more often if neces-sary.
• A dirty filter reduces the efficien-cy of the air conditioner andcould cause product malfunctionor damage.
Do not insert hands or otherobjects through the air inlet oroutlet while the air conditioneris plugged in.
• There are sharp and movingparts that could cause personalinjury.
Do not drink the water drainedfrom the unit.
• It is not sanitary and couldcause serious health issues.
Use a firm stool or ladder when cleaning ormaintaining the air conditioner.
• Be careful and avoid personal injury.
Replace the all batteries in the remote controlwith new ones of the same type. Do not mixold and new batteries or different types of bat-teries.
• There is risk of fire or explosion
Do not recharge or disassemble the batteries.Do not dispose of batteries in a fire.
• They may burn or explode.
If the liquid from the batteries gets onto yourskin or clothes, wash it well with clean water.Do not use the remote if the batteries haveleaked.
• The chemicals in batteries could cause burns orother health hazards.
Disuse
10 Room Air Conditioner
Dimensions
Dimensions
Pipe Hole Fix Hole
Hanger Hole
H
W D
W mm 600
H mm 600
D mm 146(143)
Model
DimensionINDOOR
Indoor Unit
This symbol alerts you to the risk of electric shock.
This symbol alerts you to hazards that could cause harm to theair conditioner.
This symbol indicates special notes.NOTICE
Symbols Used in this Manual
Service Manual 11
W L2
L3
L1 D
H
L4
L5Gas side
(3-way valve)
Liquid side(2-way valve)
MODELDIM unit
W mm 770
H mm 545
D mm 245
L1 mm 285
L2 mm 64
L3 mm 518
L4 mm 10
L5 mm 100
Dimensions
Outdoor Unit
OUTDOOR
12 Room Air Conditioner
Installation
Installation
Indoor unit
• Do not have any heat or steam near the unit.
• Select a place where there are no obstacles infront of the unit.
• Make sure that condensation drainage can beconveniently routed away.Do not install near a doorway.
• Use a stud finder to locate studs to preventunnecessary damage to the wall.
Outdoor unit• If an awning is built over the unit to prevent direct sunlight or
rain exposure, make sure that heat radiation from the con-denser is not restricted.
• Ensure that the space around the back and sides is morethan 30cm. The front of the unit should have more than70cm of space.
• Do not place animals and plants in the path of the warm air.• Take the weight of the air conditioner into account and select
a place where noise and vibration are minimum.• Select a place where the warm air and noise from the air
conditioner do not disturb neighbors.
Rooftop Installations:
• If the outdoor unit is installed on a roof structure,be sure to level the unit. Ensure the roof struc-ture and anchoring method are adequate for theunit location.
• Consult local codes regarding rooftop mounting.
More than 20cmMore than 50cm
More than 1.5m
Morethan 50cm
• Capacity is based on standard length and maxi-mum allowance length is on the basis of reliability.
• Oil trap should be installed every 5~7 meters.
Pipe SizeCapacity(Btu/h) GAS LIQUID
Max. LengthA (m)
AdditionalRefrigerant
(g/m)
Max.Elevation
B (m)
StandardLength
(m)
5k~14k3/8"(Ø9.52) 1/4"(Ø6.35) 4 or 7.5 7 15 20
1/2"(Ø12.7) 1/4"(Ø6.35) 4 or 7.5 7 15 20
1/2"(Ø12.7) 1/4"(Ø6.35) 4 or 7.5 15 30 20
18k~28k 5/8"(Ø15.88) 1/4"(Ø6.35) 4 or 7.5 15 30 20
5/8"(Ø15.88) 3/8"(Ø9.52) 4 or 7.5 15 30 30
30k~38k5/8"(Ø15.88) 3/8"(Ø9.52) 7.5 15 30 30
3/4"(Ø19.05) 3/8"(Ø9.52) 7.5 15 30 50
If case more than 5m
Outdoor unit
Indoor unit
A
BOutdoor unit
Indoor unit
A
B
AOil trap
Outdoor unit
Indoor unitB
If piping length is more than 5m
Selection of the Best Location
Piping Length and Elevation
More than 30cm More than 30cm
More than 60cm
More than 60cm
More than 70cm
Service Manual 13
Installation
Preparing Work for InstallationOpen panel front1. Pull the upper part of the front panel.
2. Lift up the panel.
3. To detach the front panel, remove the two screws at the lower part.
4. Detach the front panel from the body.
5. To detach the panel, disconnect the connector at the upper part.
Cover pipe and cover side remove1. Please remove the screw of the center tuning cover.2. Pull up the side cover of desired connecting direction, then
cover side is separated.3. Pick the pipe hole of the side cover.
CAUTION: After removing the pipe hole, cutthe burr for safety.
When making pipe path through rearwall, you don’t need to pick the pipe hole.
NOTICE
Drain hose junction1. Remove the rubber stopple in the desired drain direc-
tion.
2. Insert drain hose into the handle of drain pan, andjoin drain hose and connecting hose according to thefigure by.
Panel Front Connector
Side cover
Pipe hole
Only thedesired direction
rubber cap
Only thedesired direction
Connectingpart
Adhesive
Drainhose
14 Room Air Conditioner
Installation
Fixing Indoor Unit
• Drill the piping hole with a ø50mm hole core drill.Drill the piping hole at either the right or the left withthe hole slightly slanted to the outdoor side.
Drill a Hole in the Wall
5-7m
m
(0.2
~0.
3")
Indoor
WALL
Outdoor
Plastic anchors
INSTALLATION GUIDE MAP
10mmINSTALLATION GU
INSTAIIATION GUIDE MAP
Plastic anchors
INSTALLATION GUIDE MAP
INSTALLATION GUIDE MAP
Hanger hole(Rear side of the product)
3. Make a hole with a diameter of 6mm and depth of 30-35mm by piercing a screw point.
5. Drive the fore plastic anchors into drilled points.
7. Hang the hole of product at the upper screws, and remove the map. (Falling attention)
9. Check the fixed product with light power.
1. Attach an Installation guide map on the desired surface.
2. Look at suited horizon by horizontal meter on the horizontal setting line, and fix lightly the map by adhesive tape.
4. Drill the pierted part as a diameter of 50mm for connecting piping. (In case of piercing rear surface)
6. First, Drive the two points of the upper parts by screws. (Leave 10mm for hanging the product)
8. Drive the lower parts after facing the hole of product with plastic anchors, and fix completely the upper screws.
10. In case of nothing wrong, connect the pipe and the wire. (Refer to installation manual)
Horizontality
INSTALLATION GUIDE MAP
Service Manual 15
Flaring work and connection of piping
Flaring work and connection of piping
Flaring workFlaring workMain cause for refrigerant leakage is due to defect in theflaring work. Carry out correct flaring work using the follow-ing procedure.
Cut the pipes and the cable.• Use the piping kit accessory or pipes purchased locally.• Measure the distance between the indoor and the outdoor unit.• Cut the pipes a little longer than the measured distance.• Cut the cable 1.5m longer than the pipe length.
Check• Compare the flared work with figure below.
• If flare is noted to be defective, cut off the flared sec-tion and re-flare it.
• Preparing the indoor unit's piping and drain hose for instal-lation through the wall.
• Route the indoor tubing and the drain hose in the directionof rear left or right
• Tape the tubing, drain hose and the connecting cable. Besure that the drain hose is located at the lowest side of thebundle. Locating at the upper side can cause drain pan tooverflow inside the unit.
• Carry out flaring work using flaring tool as shown below.
Burr removal• Completely remove all burrs from the cut cross section of
pipe/tube.
• Put the end of the copper tube/pipe in a downward direc-tion as you remove burrs in order to avoid dropping burrsinto the tubing.
Putting nut on• Remove flare nuts attached to indoor and outdoor unit,
then put them on pipe/tube having completed burr removal.(not possible to put them on after flaring work)
Flaring work• Firmly hold copper pipe in a die in the dimension shown in
the table above.
Copperpipe 90° Slanted Uneven Rough
Bar
Copper pipe
Clamp handleRed arrow mark
Cone
Yoke
Handle
Bar"A"
Inclined
Inside is shiny without scratchesSmooth all round
Even lengthall round
Surfacedamaged
Cracked Uneventhickness
= Improper flaring =
PipeReamer
Point down
Flare nut
Copper tube
Drain hose
mm inch mmØ6.35 1/4 0~0.5Ø9.52 3/8 0~0.5Ø12.7 1/2 0~0.5Ø15.88 5/8 0~1.0Ø19.05 3/4 1.0~1.3
Outside diameter A
Connection of piping -- Indoor
16 Room Air Conditioner
Flaring work and connection of piping
Wrench
Indoor unit tubing
Open-end wrench (fixed)
Connection pipe
Flare nut
Indoor unit tubing Flare nut Pipes
Vinyl tape(narrow)Adhesive
Drain pipe
Indoor unit drain hose
Plastic bands Insulation material
Vinyl tape(narrow)
Connectionpipe
Connecting cable
Vinyl tape(wide)
Wrap with vinyl tape
Indoor unit pipe
PipeConnecting the pipings to the indoor unit anddrain hose to drain pipe.• Align the center of the pipes and sufficiently tighten
the flare nut by hand.
• Tighten the flare nut with a wrench.
• When extending the drain hose at the indoor unit, install thedrain pipe.
Wrap the insulation material around the con-necting portion.•Overlap the connection pipe insulation material and theindoor unit pipe insulation material. Bind them together withvinyl tape so that there is no gap.
• Wrap the area which accommodates the rear piping hous-ing section with vinyl tape.
mm inch kg.mØ6.35 1/4 1.8Ø9.52 3/8 4.2Ø12.7 1/2 5.5Ø15.88 5/8 6.6Ø19.05 3/4 6.6
Outside diameter Torque
CAUTION: If the drain hose is routed insidethe room, insulate the hose with an insulationmaterial* so that dripping from"sweating"(condensation) will not damage fur-niture or floors.*Foamed polyethylene or equivalent is recom-mended.
Connectingcable
Gas side piping
Liquid side pipingDrain hose
Loop
CAUTION: Installation InformationFor right piping. Follow the instructionbelow.
Good case• Press on the upper side of clamp and unfold the tub-
ing to downward slowly.
Service Manual 17
Flaring work and connection of piping
Bad case• Following bending type from left to right may cause
damage to the turbing.
Align the center of the pipings and sufficientlytighten the flare nut by hand.
Finally, tighten the flare nut with torque wrenchuntil the wrench clicks.
• When tightening the flare nut with torque wrench, ensurethe direction for tightening follows the arrow on the wrench.
Connection of the pipes-Outdoor
mm inch kg.mØ6.35 1/4 1.8Ø9.52 3/8 4.2Ø12.7 1/2 5.5Ø15.88 5/8 6.6Ø19.05 3/4 6.6
Outside diameter Torque
Outdoor unit Gas side piping(Bigger diameter)
Liquid sidepiping(Smallerdiameter)
Torque wrench
18 Room Air Conditioner
Checking the drainage and forming the pipings
Checking the drainage and forming the pipings
Checking the drainage Form the pipingTo check the drainage.• Pour a glass of water on the evaporator.
• Ensure the water flows through the drain hose of the indoorunit without any leakage and goes out the drain exit.
Form the piping by wrapping the connectingportion of the indoor unit with insulation mate-rial and secure it with two kinds of vinyl tapes.• If you want to connect an additional drain hose, the end of
the drain outlet should be routed above the ground. Securethe drain hose appropriately.
In cases where the outdoor unit is installedbelow the indoor unit perform the following.• Tape the piping, drain hose and connecting cable from
down to up.
• Secure the tapped piping along the exterior wall using sad-dle or equivalent.
In cases where the Outdoor unit is installedabove the Indoor unit perform the following.• Tape the piping and connecting cable from down to up.
• Secure the taped piping along the exterior wall. Form a trapto prevent water entering the room.
• Fix the piping onto the wall by saddle or equivalent.
Drain piping• The drain hose should point downward for easy drain flow.
• Do not make drain piping.
Downward slope
Do not raiseAccumulateddrain water
Tip of drain hose dipped in water
Air
WavingWaterleakage
Waterleakage Ditch
Less than 50mm gap
Waterleakage
Taping
Drain hose
Pipings
Connecting cable
Trap is required to prevent waterfrom entering electrical parts.
Seal small openingsaround pipings with agum type sealer.
Seal a small opening around the pipings with gum type sealer.
Trap
Trap
Service Manual 19
Air purging
Air and moisture remaining in the refrigerant system haveundesirable effects as indicated below.
• Pressure in the system rises.
• Operating current rises.
• Cooling(or heating) efficiency drops.
• Moisture in the refrigerant circuit may freeze and block cap-illary tubing.
• Water may lead to corrosion of parts in the refrigerationsystem.
Therefore, the indoor unit and tubing between the indoor andoutdoor unit must be leak tested and evacuated to removeany noncondensables and moisture from the system.
• Do a leak test of all joints of the tubing(both indoor and out-door) and both gas and liquid side service valves.Bubbles indicate a leak. Be sure to wipe off the soap with aclean cloth.
• After the system is found to be free of leaks, relieve thenitrogen pressure by loosening the charge hose connectorat the nitrogen cylinder. When the system pressure isreduced to normal, disconnect the hose from the cylinder.
Preparation• Check that each tube(both liquid and gas side tubes)
between the indoor and outdoor units have been properlyconnected and all wiring for the test run has been complet-ed. Remove the service valve caps from both the gas andthe liquid side on the outdoor unit. Note that both the liquidand the gas side service valves on the outdoor unit arekept closed at this stage.
Leak test• Connect the manifold valve(with pressure gauges) and dry
nitrogen gas cylinder to this service port with charge hoses.
• Pressurize the system to no more than 150 P.S.I.G. withdry nitrogen gas and close the cylinder valve when thegauge reading reached 150 P.S.I.G. Next, test for leakswith liquid soap.
Air PurgingAir purging
Air purging with vacuum pump
Be sure to use a manifold valve for air purging. If it is notavailable, use a stop valve for this purpose. The "Hi" knobof the manifold valve must always be kept close.
To avoid nitrogen entering the refrigerant system in a liquidstate, the top of the cylinder must be higher than its bottomwhen you pressurize the system. Usually, the cylinder isused in a vertical standing position.
Lo Hi
Indoor unit
Outdoor unit
Manifold valve
Charge hose
Nitrogen gascylinder(in verticalstanding position)
Pressure gauge
20 Room Air Conditioner
Air purging
Evacuation• Connect the charge hose end described in the preceding
steps to the vacuum pump to evacuate the tubing andindoor unit.Confirm the "Lo" knob of the manifold valve is open. Then,run the vacuum pump.The operation time for evacuation varies with tubing lengthand capacity of the pump. The following table shows thetime required for evacuation.
• When the desired vacuum is reached, close the "Lo" knobof the manifold valve and stop the vacuum pump.
Finishing the job
• With a service valve wrench, turn the valve stem of liquidside valve counter-clockwise to fully open the valve.
• Turn the valve stem of gas side valve counter-clockwise tofully open the valve.
• Loosen the charge hose connected to the gas side serviceport slightly to release the pressure, then remove the hose.
• Replace the flare nut and its bonnet on the gas side serviceport and fasten the flare nut securely with an adjustablewrench. This process is very important to prevent leakagefrom the system.
• Replace the valve caps at both gas and liquid side servicevalves and fasten them tight.
This completes air purging with a vacuum pump. The air conditioner is now ready to test run.
(1) Remove the caps from the 2-way and 3-way valves.
(2) Remove the service-port cap from the 3-way valve.
(3) To open the 2-way valve turn the valve stem counter-clockwise approximately 90°, wait for about 2~3 sec, andclose it.
(4) Apply a soap water or a liquid neutral detergent on theindoor unit connection or outdoor unit connections by asoft brush to check for leakage of the connecting pointsof the piping.
(5) If bubbles come out, the pipes have leakage.
Soap water method
Gas side
Liquid side
CapHexagonal wrench
2-way valve(Open)
3-way valve(Close)
Required time for evacuation when 30 gal/h vacuumpump is used
10 min. or more 15 min. or more
If tubing length is less than 10m (33 ft) if tubing length is longer than 10m (33 ft)
Indoor unit
Outdoor unit
Lo Hi
Manifold valve
Vacuum pump
Pressure gauge
Open Close
Service Manual 21
Air purging
1. First, Check the side cover assembly exactly, and fixthe power cord in the bottom groove of cover sideleft.
2. Assemble connecting lead wire with controller, fix theupper part of panel front, and match the lower part ofpanel front.
3. Screw up panel front, and suspend the hook of panelfront in the groove.
Panel FrontConnector
Panel Front Assembly
22 Room Air Conditioner
Test running
Test Running1. Check that all tubing and wiring have been properly
connected.2. Check that the gas and liquid side service valves are
fully open.
Prepare remote controller
1. Remove the battery cover by pulling it according to thearrow direction.
2. Insert new batteries making sure that the (+) and (–) of battery are installed correctly.
3. Reattach the cover bypushing it back into position.
• Use 2 AAA(1.5volt) batteries. Do not userechargeable batteries.
• Remove the batteries from the remotecontrol if the system is not going to beused for a long time.
Settlement of outdoor unit• Anchor the outdoor unit with a bolt and
nut(ø10mm) tightly and horizontally on a concreteor rigid mount.
• When installing on the wall, roof or rooftop, anchorthe mounting base securely with a nail or wireassuming the influence of wind and earthquake.
• In the case when the vibration of the unit is con-veyed to the hose, secure the unit with an anti-vibration bushing.
Evaluation of the performance
Operate unit for 15~20 minutes, then check the systemrefrigerant charge:1. Measure the pressure of the gas side service valve.2. Measure the temperature of the intake and discharge
of air.3. Ensure the difference between the intake tempera-
ture and the discharge is more than 8°C(46°F)(Cooling) or (Heating).
4. For reference; the gas side pressure of optimumcondition is as below.(Cooling)
If the actual pressure is higher than shown,the system is most likely over-charged, andcharge should be removed. If the actual pres-sure are lower than shown, the system ismost likely undercharged, and charge shouldbe added.
The air conditioner is now ready for use.
NOTICE
NOTICE
Bolt
Tubing connection
Discharge temperature
Discharge airIntake temperature
R-22 35°C (95°F) 4~5kg/cm2G(56.8~71.0 P.S.I.G.)
R-410A 35°C (95°F) 8.5~9.5kg/cm2G(120~135 P.S.I.G.)
Outside ambientTEMP.Refrigerant The pressure of the gas side
service valve.
This is performed when the unit is to be relocatedor the refrigerant circuit is serviced.Pump Down means collecting all refrigerant in theoutdoor unit without loss in refrigerant gas.
CAUTION:Be sure to perform Pump Down procedure with theunit cooling mode.
Pump Down Procedure1. Connect a low-pressure gauge manifold hose to
the charge port on the gas side service valve.2. Open the gas side service valve halfway and purge
the air from the manifold hose using the refrigerantgas.
3. Close the liquid side service valve(all the way in).4. Turn on the unit's operating switch and start the
cooling operation.5. When the low-pressure gauge reading becomes 1
to 0.5kg/cm2 G(14.2 to 7.1 P.S.I.G.), fully close thegas side valve stem and then quickly turn off theunit. At that time, Pump Down has been completedand all refrigerant gas will have been collected inthe outdoor unit.
PUMP DOWN
Service Manual 23
Functions
Functions
• Room temperature sensor. (Thermistor)• Pipe temperature sensor. (Thermistor)
• Maintain the room temperature in accordance with the Setting Temp.
• Indoor fan is delayed for 5 sec at the starting.
• Restarting is for approx. 2 minutes.
• Super High, High, Mid, Low
Indoor Unit
Operation ON/OFF by Remote controller
Sensing the Room Temperature
Room temperature control
Starting the Current Control
Time Delay Safety Control
Indoor Fan Speed Control
Pre-Heating Control(Comp)
Cooling Mode Operation
Healty dehumidification Mode Operation
Heating Mode Operation
Jet Cool Mode Operation
Jet Heat Mode Operation
Energy Saving Cooling Mode Operation
24 Room Air Conditioner
Functions
• Both the indoor and outdoor fan stops during defrosting.
Defrost(Deice) Control (Heating)
Hot-start Control (Heating)
Heater (Optional)
NEO Plasma Purification Operation(Optional)
Auto Clean(Optional)
Energy-Saving Control(Optional)
Auto Changeover(Heating)
• The fan is switched to S-low(Cooling), low(Heating) speed.• The unit will be stopped after 1, 2, 3, 4, 5, 6, 7 hours.
• The fan is switched to intermittent or irregular operation• The fan speed is automatically switched from high to low speed.
• The louver can be set at the desired position or swing up and down automatically.
Sleep Mode Auto Control
Natural Air Control by CHAOS Logic
Airflow Direction Control
• The function will be operated while in any operation mode with selecting the function.• The function is to be stopped while it isoperating with selecting the function.
• The indoor fan stops until the evaporator pipe temperature will be reached at 30°C.
Service Manual 25
Functions
• If power is on, it will operate to chage capacitor on controller and power relay will operate after about 2~5sec.
• The active power filter is designed to correct power factor(cos θ) and to regulate DC link voltage.• It will be operated PFC circuit when the compressor freq. is over 30Hz and wattage is over 450 watt.
• The final operating freq. of comp. is set the lowest freq. that limited outdoor temp., discharge pipe temp.,heat-sink temp., target freq., owing to CT.
• It will be changed the drive freq. of comp. according to temp. of indoor and outdoor.
• It is only operated in the heating operation mode except defrosting operation.
• High speed- Although fan motor speed is middle, it will change high speed in case of below AC193V, over 45°C of
outdoor temp., and over fc, fh of comp. Freq.• Middle speed
- Nomal mode• Low speed
- Although fan motor speed is middle, it will change Low speed in case of over AC 270V, over 21°C(Heating Mode) of outdoor temp. below 24°C (Cooling Mode) of outdoor temp.
• When the temp. of power module increases to 85°C, controller decreases Freq. of Comp.
Outdoor Unit
Power Relay Control
Active Power Filter Control(PSC)
Comp. Freq. Control
OverheatIng. Protection(Power Module)
Freq. Speed Control(Up/Down Speed)
Total Current Control (Over Current Protection)
DC Peak Current Control
4 way Valve Control
Outdoor Fan Motor Control
Discharge Pipe Temp. Control
Low Ambient
Comp. Torque Control
Over Heating Protection (Comp.)
26 Room Air Conditioner
Healthy Dehumidification Operation Mode.( )
Remote Control
Operation ON/OFF
Reset
Operation Mode Selection
Temperature Setting
Timer Selection
Timer Setting
JET COOL
Timer Cancel
Sleep Operation
Airflow Direction Control
(Cooling model only)
(Heating model only)
TEMPERATURE LOW HIGH
Cooling Operation Mode.( )
Heating Operation Mode.( )
Auto Operation Mode.( )
Room, Temperature Display
Setting the Time or Timer
PLASMA(Optional)
ON OFF
SET
PLASMA
CANCEL
(Optional)Auto Clean
Fan Speed Selection
(Low) (Med) (High) (CHAOS)
Power Save Cooling Button
AUTO CLEAN
: (High:39°C Low:11°C)
: OFF, ON, OFF ON
: Cancel Sleep Mode, Timer ON or Timer OFF
: 1, 2, 3, 4, 5, 6, 7, Off Timer
Cooling Down to 18°CUp to 30°C
Heating Down to 16°CUp to 30°C
Functions
Service Manual 27
Operation
Function of Controls
Operation
• DISPLAY1) C/O Model
Operation Indicator• ON while in appliance operation, OFF while in appliance pause.• Flashing while in disconnection or short in Thermistor. (3 sec off / 0.5 sec on)
Timer Indicator• ON while in timer mode (on/off), OFF when timer mode is completed or canceled.
Comp. Running Incidator• While in appliance operation, ON while in outdoor unit compressor running, OFF while in compressor off.
2) H/P Model
Operation Indicator• ON while in appliance operation, OFF while in appliance pause.• Flashing while in disconnection or short in Thermistor. (3 sec off / 0.5 sec on)
Timer Indicator• ON while in timer mode (on/off), OFF when timer mode is completed or canceled.
Defrost Indicator• OFF except when hot start during heating mode operation or while in defrost control.
Sleep Indicator• On during sleep reservation, Off in case of cancel of sleep reservation.
• If the indoor pipe temperaure is below 0°C in 7 min. after the compressor operates without pause while incooling cycle operation mode, compressor, outdoor fan are turned off.
• When indoor pipe temp. is 7°C or higher after 2 min pause of compressor compressor, outdoor fan is turned on according to the condition of the room temperature.
Comp. free
Comp. Step 4Comp. Step 2
Comp. off0˚C3˚C6˚C 7˚C
Indoor pipetemp.
Protection of the evaporator pipe from frosting
28 Room Air Conditioner
Operation
Cooling mode operation
• Operating frequency of compressor depend on the difference of the temperature.(= intake air Temp.- Compressor off Temp.
• Compressor off temp.= setting temp. -0.5°Con temp. = setting temp. +0.5°C
• If compressor operates at some operating frequency, the operating frequency of compressor cannot bechanged within 30 seconds.
• Condition of compressor turned off- When intake air temperature stay at the temperature between setting temp. -0.5°C and setting temp. -1.0°C for 3 minutes continuously.
- When intake air temperature reaches below the temperature of setting temp. -1.0°C.
• Compressor 2 minutes delay- The compressor can restart minimum 2 minutes later after compressor off.
Temp. differences Comp. Operating frequencyover 2.5°C Step 72.0~2.49°C Step 61.5~1.99°C Step 51.0~1.49°C Step 40.5~0.99°C Step 30.0~0.49°C Step 2
0.5~0°C Step 1
[The operating freq. step of comp.]
[The targeting operating freq. of comp. each model]
Model
AS-W096F1/E/V/GG0 25 35 40 53 64 73 82AS-W126F1/E/V/GG0 25 35 40 53 64 73 82
Comp. Operating frequencyStep 1 Step 2 Step 3 Step 4 Step 5(Fc) Step 6 Step 7
Healthy Dehumidification mode operation• When the dehumidification operation is set by the remote controller the intake air temperature is detected and
the setting temp. is automatically set according to the intake air temperature.
• When intake air temp reaches above the temp of setting +1.0°C, condition of compressor same as coolingmode operation.
• When intake air temperature reaches bolow the temp of setting –1.0°C, compressor operate step1~step3 andindoor fan speed repeatly operate low or stop.
Intake air Temp.
26°C ≤ intake air temp.
24°C ≤ intake air temp.< 26°C
18°C < intake air temp. < 24°C
intake air temp. ≤ 18°C
Setting Temp.
25°C
intake air temp. -1°C
intake air temp. -0.5°C
18°C
Service Manual 29
Operation
• Operating frequency of compressor depend on the difference of the temperature( = desired temp. – indoor temp. )
• Compressor off temp. = setting temp. + 4 °Con temp. = setting temp. + 2 °C
• If compressor operates at some operation frequency, the operating frequency of compressor cannot bechanged within 30 seconds.
• Condition of compressor turned off- When intake air temperature reaches +3°C above the setting temperature.
• Condition of indoor fan turned off- While in compressor on:indoor pipe temp. < 30°C
• While in defrost control, between the indoor and outdoor fans are turned off.• Compressor 2minutes delay
- After compressor off, the compressor can restart minimum 2 minutes later.
Temp. differences
4.5~4.99°C
4.0~4.49°C
3.5~3.99°C
3.0~3.49°C
2.5~2.99°C
2.0~2.49°C
~2.0°C
Comp. Operating frequency
Step 1
Step 2
Step 3
Step 4
Step 5
Step 6
Step 7
[ The operating freq. step of comp]
Heating mode operation
• While in heating mode or Fuzzy operation, the Jet Cool key cannot be input. When it is input while in theother mode operation(cooling, dehumidification, ventilation), the Jet Cool mode is operated.
• In the Jet Cool mode, the indoor fan is operated super-high speed for 30 min. at cooling mode operation.• In the Jet Cool mode, the room temperature is controlled to the setting temperature, 18°C.• When the sleep timer mode input while the Jet Cool mode operation, the Jet Cool mode has the priority.• When the Jet Cool key is input, the upper/lower vane is reset to those of the initial cooling mode and then
operated in order that the air outflow could reach further.
Jet cool mode operation
[The targeting operating freq. of comp. each model]
Model
AS-W096F1/E/V/GG0 35 38 48 63 71 85 94AS-W126F1/E/V/GG0 35 38 48 63 71 85 94
Comp. Operating frequencyStep 1 Step 2 Step 3 Step 4 Step 5(Fh) Step 6 Step 7
30 Room Air Conditioner
Operation
• While in cooling mode or Fuzzy operation, the Jet Heat key cannot be input. When it is input while in theHeating mode operation (dehumidification), the Jet Heat mode is operated.
• In the Jet Heat mode, the indoor fan is operated super-high speed for 60 min. at Heating mode operation.• In the Jet Heat mode, the room temperature is controlled to the setting temperature, 30°C.• When the sleep timer mode input while the Jet Heat mode operation, the Jet Heat mode has the priority.• When the Jet Heat key is input, the upper/lower vane is reset to those of the initial Jet heating mode and
then operated in order that the air outflow could reach under flow.
CLOSED
Mode 8Mode 7Mode 6Mode 5Mode 4Mode 3Mode 2
Mode 1
OPEN
65°
8°
20°
Jet heat mode operation
1. Chaos swing mode• By the Chaos swing key input, the upper/lower vane automatically operates with the Chaos swing or it is
fixed to the desired direction.
Swing mode
Service Manual 31
Operation
1. Sleep timer operation for cooling cycle• While in cooling mode operation, 30 min. later since the start of the sleep timer, the setting temperature
increase by 1°C. After another 30min. elapse, it increases by 1°C again.
2. Sleep timer operation for heating cycle• While in heating mode operation, 60 min. later since the start of the sleep timer, the setting temperature
decrease by 1°C. After another 60min. elapse, it decreases by 1°C again.
Setting temp. (˚C)
1.0˚C up
1.0˚C up
Cooling ON temp.(Setting temp. +0.5˚C)
Cooling OFF temp.(Setting temp. -0.5˚C)
0.5 1 Sleep time (hr)
Setting temp. (°C)
Heating ON temp.(Setting temp)
Heating OFF temp.(Setting temp. +3.0°C)
1 2 Sleep time (hr)
1.0°C down
1.0°C down
• When the sleep time is reached after [1,2,3,4,5,6,7hr] is input by the remote control during the operation, theoperation of the appliance stops.
• When the appliance is on pause, the sleep timer mode cannot be input.
Sleep timer operation
32 Room Air Conditioner
Operation
Auto restarting operation
Forced operation
Test Operation
• When the power is restarted after a sudden power failure while in appliance operation, the mode before thepower failure is kept on the memory and the appliance automatically operates in the mode on the memory.
• Operation mode that is kept on the memory- State of operation ON/OFF- Operation mode/setting temp./selected airflow speed- Sleep timer mode/remaining time of sleep timer- Chaos Swing- Plasma Operation
• To operate the appliance by force in case that the remote control is lost, the forced operation selection switchis on the main unit of the appliance to operate the appliance in the standard conditions.
• The operation condition is set according to the outdoor temp. and intake air temperature as follows.
The unit select before operating mode in 3 hours.
• Press the Tact Switch for compulsory operation of the main body for 3 seconds in order to operate in the trialoperation mode. - Operation mode: Cooling- Indoor pan: High speed- COMP frequency: Step 5- COMP turns off after operating for about 18 minutes irrespective of indoor temperature.
Indoor temp.
Over 23°C
21~23°C
below 21°C
Setting temp.
22°C
23°C
24°C
Setting speed ofindoor fan
High speed
Operating Mode
Cooling
Healthy Dehumidification
Heating
Service Manual 33
Operation
• Power relay turns on 1 second later after the power is input to the outdoor unit.• Control sequence : power on PTC operating power relay on
CT1 control• If the operating current reaches I1, the operating frequency of the compressor decrease.• After decreasing the operating frequency by 1step, if operating current is below I1 for 60 seconds continuous-
ly, the operating frequency of compressor increase by 1step.
CT2 control• If the operating current of the appliance reaches I2, the compressor stop instantly and 2 minutes later the
compressor restart again.• If CT2 occurs 5 times within 1hour, the appliance turn off and blinks 7 times(ERROR CODE7).
I1:Current of operating frequency downI2: Current of compressor cut off
cf. I1 is set the lowest level between intial value and in case dectection of dc paeak current.
Control table
DC Peak Current Error by a fault signal of IPM• If the operating current of IPM reaches 35A ±3A, the compressor stop instantly.• If DC PEAK occurs 5 times within 1 hour, the appliance turns off and blinks 6 times(ERROR CODE6).
DC Peak Current Error by the compressor lock• If the DC LINK voltage below DC 140V occurs 5 times within 1 hour while the compressor is operating, the
appliance turns off and blinks 6 times(ERROR CODE6).
DC Peak Current Error due to High Outdoor Pipe TH• If the outdoor pipe TH is over 65 °C for 5 times within an hour while the compressor is operating, the appli-
ance turns off and blinks 6 times (ERROR CODE6).
Power relay control
Protection from total current control
Protection from DC Peak Current
AS-W096F1/E/V/GG0 7.0A 8.5A 7.5A 9.0A 10.0A
AS-W126F1/E/V/GG0 7.0A 8.5A 7.5A 9.0A 10.0A
I1
Cooling Heating Cooling HeatingOutdoor temp ≥ 38°C Outdoor temp < 38°C I2Model
34 Room Air Conditioner
Operation
• If the temperature of the heat sink TH. reaches over Toff, the Compressor stop instantly.• It will be limited the compressor operating frequency according to the heat sink TH.(refer to below FIG.)• The LED blinks 4 times, when the thermistor is open or short, and when the temperature is over Toff.
• If the temperature of the discharge pipe of compressor reaches over 130°C or below -30°C the compressorstop instantly.
• It will be limited the compressor operating frequency according to the compressor dome TH.(Refer to belowFig.)
• Temperature range by COMP SPEC varies by 10°C.
Portection from overheating of power module
Portection from overheating of compressor
T off °C
T2 °C
Heat Sink Temp.
T1 °C
T on °C
COMPFreq. Free OFF FreeFc-1 Fc-1Fc-2 Fc-2
∆T = (T off - T on)T1 = T on + ∆TT2 = T on + 2 * ∆T
D-Pipe Temp.
COMP Freq. Free FreeFh min OFFFc-1 Fc-1Fc-2 Fc-2
∆T = (T off - T2)/2T1 = T2 - 2 * ∆TT3 = T2 + ∆T
T off °C
T2 °C
T3 °C
T1 °C
-13 °C
1 AS-W096F1/E/V/GG0 85 95
2 AS-W126F1/E/V/GG0 85 95
No. MODEL T on T off
1 AS-W096F1/E/V/GG0 100 110
2 AS-W126F1/E/V/GG0 100 110
No. MODEL T on T off
Service Manual 35
Operation
• While in heating mode operation in order to protect the evaporator pipe of the outdoor unit from freezing,reversed to cooling cycle to defrost the evaporator pipe of the outdoor unit.
• Defrosting control is available 40 minutes later since heating cycle started and the difference of the pipe tem-perature of outdoor unit reaches above option 1.
• The defrosting control is available without reference to heating operation time only if the pipe temperature ofoutdoor unit reaches below option 2.
Setting Freq.OperatingFreq. Of Comp(Comp off Inapplicable.)
4-Way
IndoorFAN
IndoorFAN
Pre-HeatLED
5sec 5sec
Minimum TimeOf Heating Main Deice time
30sec 10sec 1min
ON
OFF
Hi Speed
ON
SettingSpeed
HotStartOFF
Super low speed¡ low speed
ONOFF OFF
Deice STEP 0 1 2 3 4 5 6
EEVOpen step
The Degree of Superheat Control
Starting Step
off
Min (Option)_(12)
Step 3 (Option)_(15)
300 (Option)_(14)off
Step 5 (Option)_(13)
Min (Option)_(12)
off
15 sec
Min (Option)_(12) Min (Option)_(12)
OperatingFreq. Of Comp(Comp off Applicable.)
Step 3 (Option)_(15) Step 5 (Option)_(13)
SettingSpeed
SettingSpeed
Setting Freq.
Setting Freq.
>5>5>5
-25-25-30-30Option 2
Expected heating operating time And Heating operating time 40 minutes
The minimum Time ofHeating(sec)
>4Option 1
-10˚C less than 0˚C more than-10~-5˚C between -5~0˚C betweenThe mean outdoortemperature
Defrosting control
36 Room Air Conditioner
Operation
• Function used to perform the Self Cleaning to prevent the Unit from Fungus and Bad Odors.• Used after the Shut Down of Cooling Operation to Clean the Evaporator and keep it as fresh for the Next operation.• During Self Cleaning the Outdoor Unit is Switched off.• The function is easy to be operated as It is accessed through the Remote Controller.
Auto Cleaning
Auto Changeover
Low Ambient
Comp. ONOFF
Setting Step S-LowIndoor Fan
ON
Cooling CYCLE
OFF
30 Min
CleaningCooling Start
25 SecOn
Off
• The air conditioner changes the operationmode automatically to keep indoor tempera-ture.
• When room temperature vary over ±2°C withrespect to setting temperature, air condition-er keeps the room temperature in ±2°C withrespect to setting temperature by autochange mode.
• If outdoor temperature drops below certain temperature,liquid back is prevented by reducing fan speed.It can prevent frosting of evaporator and keep cooling operation
• No matter even if the outdoor temperature reaches -10°C.• You can Cool your room at your desired temperature all your around.
Freq.
- 0°C °… Outdoor temp.
Outdoor pipe temp.0°C outdoor fan On/Offcontrol
°
Comp Freq.
Outdoor fan
On On
OffOff
Outdoor temp.:-10°C
-5
0
5
10
15
20
25
0 50 100 150 200
Time(Min.)
Tem
p.(°
C)
Outdoor fan On/Off control
Cond . temp.
COOLINGAutoChangeMode.
Outdoor temp.Indoor temp.
Outdoortemp.
30°C
20°C
10°C
+2°C+1°C
+0.5°CSet Temp.-0.5°C-1°C-2°C
HEATING
Service Manual 37
• This is operation to preheat the compressor by conducting current through motor coils of the compressor for pre-venting phenomena that liquid refrigerants are income due to difference between temperature of the outside pipeand temperature of the compressor as outdoor temperature becomes low.
• Enter preheat operation of the compressor if meeting , , conditions as below at the same time. where outdoor temperature is less than 5˚Cwhere discharge temperature of the compressor is more than 15˚Cwhere the compressor turns off
• Release preheat operation if meeting one or more of , , conditions.where outdoor temperature is more than 5˚Cwhere diacharge temperature of the compressor is more than 25˚Cwhere the compressor turns on
1) The buzzer sounds 3 times if pressing the tact switch for 10seconds. If turning off the tack switch in this case, theoperation LED flickers and existing/additional heat Logic is toggled.
2) Display of operation LED in selection of heat option.- When selecting additional heat Logic : Flickering numbers of LED; 1 time- When selecting existing heat Logic : Flickering numbers of LED; 2 times
3) Setting is selectable regardless of operation status (on/off)
Preheat
Selection of Heat Logic Option
Operation
25˚C
15˚C
COMP Discharge Temerature
Preheat Off
Preheat On
38 Room Air Conditioner
Operation
Tact S/W
Buzzer sound
Operation LED
Flickering 4 times
10sec
ON
OFF
ON
OFF
When selecting additional heat Logic
1.5sec
(1time)
(2times)When selecting existing heat Logic
0.25sec
0.25*3 sec
1.5sec 1.5sec
1.5sec 1.5sec 1.5 sec
• Function of operation off for preventing overload when the indoor fan stops in the operating condition of the outdoorunit.
• Contents of operation- When feedback rpm of the BLDC fan motor is successively less than 50 for 12 seconds in the operation condition
of the indoor fan, it is considered as lock of the indoor fan.- If detected as lock of the indoor fan, immediately turn off the compressor and stop the indoor appliances.- Error is displayed through the indoor error display LED in this time. (Periodically flickers 8 times)- The indoor unit detects the fan lock error status even if re-operating the unit during 2min delay of Comp Off in
spite of release of the fan lock. Normal operation is done if re-operating the unit after Comp Off for 2min.
Indoor fan lock detection (BLDC)
Service Manual 39
Remote Control Operations
Operation
The controls will look like the following.
1. START/STOP BUTTONUsed to turn off/on the unit.
2. OPERATION MODE SELECTION BUTTONUsed to select the operation mode.
3. ROOM TEMPERATURE SETTING BUTTONSUsed to select the room temperature.
4. INDOOR FAN SPEED SELECTOR BUTTONUsed to select fan speed in four stepslow, medium, high and CHAOS.
5. JET COOL BUTTONUsed to start or stop the speed cooling, heating.(It operates fan in super high speed in cooling mode, heatingmode)
6. CHAOS SWING BUTTONUsed to stop or start louver movement and set the desiredup/down airflow direction.
7. ON/OFF TIMER BUTTONSUsed to set the time of starting and stopping operation.
8. TIME SETTING BUTTONSUsed to adjust the time.
9. TIMER SET/CANCEL BUTTONUsed to set and to cancel the timer operation.
10. SLEEP MODE AUTO BUTTONUsed to set sleep mode auto operation.
11. AIR CIRCULATION BUTTON Used to circulate the room air without cooling or heating.ENERGY-SAVING COOLING MODE BUTTON (OPTIONAL)For inverter type models
12. ROOM TEMPERATURE CHECKING BUTTONUsed to check the room temperature.
13. PLASMA BUTTON(OPTIONAL)Used to start or stop the plasma-purification function.
14. RESET BUTTONUsed prior to resetting time.
15. 2nd F BUTTONUsed prior to using modes printed in blue at the bottom of but-tons.
16. AUTO CLEAN BUTTON(OPTIONAL)Used to set auto clean mode.In some models this button has a 2nd function of LED luminosi-ty control.
17. HEATER BUTTON(OPTIONAL)(Not available in all models)
18. LCD LUMINOSITY BUTTON(OPTIONAL)Used to adjust LCD luminosity.
ON OFF
CANCEL
AUTO CLEANSET
1
3
5
4
9
17
10
12
15
72
813
14
11
6
Cooling Operation
Auto Operation or Auto Changeover
Healthy Dehumidification Operation
Flip-up door(opened)
Heating Operation
Signal transmitter
• Cooling Model( ), Heat Pump Model( )
1618
Operation Mode
( )
40 Room Air Conditioner
Disassembly
DisassemblyIndoor Unit
WARNING: Disconnect the unit frompower supply before making anychecks. Be sure the power switch is setto "OFF"
1. Open panel front• Pull the upper part of the front panel.
• Lift up the panel.
• To detach the front panel, remove the two screwsat the lower part.
• Detach the front panel from the body.
• To detach the panel, disconnect the connector atthe upper part.
2. To remove the Control Box.- Before removing the control box, be sure to
disconnect the wires from PWB.- Pull the cover control out from the control box
and disconnect other wires.- Remove securing screws.- Pull the control box out from the chassis carefully.
Panel Front Connector
Sensor Connector
Step Motro Connector
Front Panel Connector
HVB Connector
AC/DC Connector
Motor Connector
Service Manual 41
Disassembly
3. To remove the Evaporator.- Remove 4 screws securing the evaporator.- Pull the evaporator out from the chassis carefully.
4. Before removing the Turbo Fan.- Remove the securing screws from the chassis.- Pull the drain pan, top cover and the air guide.
5. To remove the Motor.- Remove the securing bolt from the motor shaft.- Pull the fan out from the motor shaft.- Remove 4 screws securing motor mount from the
chassis and lift up the motor mount and the bracket.
Top Cover
Air Guide
Motor MountBolt
Turbo Fan
Bracket
42 Room Air Conditioner
Troubleshooting Guide
Troubleshooting Guide
INDOOR UNIT OUTDOOR UNIT
HEATEXCHANGE(EVAPORATOR)
HEATEXCHANGE(CONDENSER)
COMPRESSOR
ACCUMULATOR
GAS SIDE
3-WAY VALVE
LIQUID SIDE
EEV3-WAY VALVE
COOLING
HEATING
REVERSINGVALVE
INDOOR UNIT OUTDOOR UNIT
HEATEXCHANGE(EVAPORATOR)
HEATEXCHANGE(CONDENSER)
COMPRESSOR
ACCUMULATOR
GAS SIDE
3-WAY VALVE
LIQUID SIDE
3-WAY VALVE
COOLING
HEATING
REVERSINGVALVE
(1) Model Capillary Tube
Refrigeration Cycle Diagram
(2) Model Adopted Electrion Expansion Valve
Service Manual 43
Troubleshooting Guide
2-way, 3-way Valve
2-way Valve (Liquid Side) 3-way Valve (Gas Side)
Shaft position Shaft position Service port
Closed Closed Closed(with valve cap) (with valve cap) (with cap)
Open Closed Open(counter-clockwise) (clockwise) (push-pin or with
vacumm pump)
Open Open Closed(with valve cap) (with valve cap) (with cap)
Closed Open Open(clockwise) (counter-clockwise) (connected manifold
gauge)
Open Open Open(with charging
cylinder)
Open Open Open(with charging
cylinder)
Open Open
Open Open
Works
Shipping
Air purging(Installation)
Operation
Pumping down(Transfering)
Evacuation(Servicing)
Gas charging(Servicing)
Pressure check(Servicing)
Gas releasing(Servicing)
1.
2.
3.
4.
5.
6.
Valve cap
Open positionClosed position
Pin
Serviceport
Serviceport cap
To outdoor unit
Flare nut
To piping connection
To outdoor unit
Hexagonal wrench (4mm)
Open positionClosed position
To piping connection
Flare nut
Open(with charging cylinder)
Open(with charging cylinder)
44 Room Air Conditioner
Troubleshooting Guide
Required tools : hexagonal wrench, adjustable wrench,torque wrenches, wrench to hold thejoints, and gas leak detector.
The additional gas for air purging has been chargedin the outdoor unit.However, if the flare connections have not be donecorrectly and there gas leaks, a gas cylinder and thecharge set will be needed.
The air in the indoor unit and in the piping must bepurged. If air remains in the refrigeration pipes, it willaffect the compressor, reduce to cooling capacity,and could lead to a malfunction.
• Procedure
(1) Recheck the piping connections.
(2) Open the valve stem of the 2-way valve coun-terclockwise approximately 90°, wait 10 sec-onds, and then set it to closed position. – Be sure to use a hexagonal wrench to operate
the valve stem.
(3) Check for gas leakage.– Check the flare connections for gas leakage.
(4) Purge the air from the system. – Set the 2-way valve to the open position and
remove the cap from the 3-way valve’s serviceport.
– Using the hexagonal wrench to press the valvecore pin, discharge for three seconds and thenwait for one minute. Repeat this three times.
(5) Use torque wrench to tighten the service portnut to a torque of 1.8kg.cm.
(6) Set the 3-way valve to the back seat.
(7) Mount the valve stem nuts to the 2-way and 3-way valves.
(8) Check for gas leakage. – At this time, especially check for gas leakage
from the 2-way and 3-way valve’s stem nuts,and from the service port nut.
Service port nut:Be sure, using a torque wrench to tighten the service port nut (after using the service port), so that it prevents thegas leakage from the refrigeration cycle.
CAUTION: Do not leak the gas in the air during Air purging.
CAUTION: If gas leakage are discoveredin step (3) above, take the followingmesures :
If the gas leaks stop when the piping connectionsare tightened further, continue working from step (4). If the gas leaks do not stop when the connectionsare retightened, repair the location of the leak, dis-charge all of the gas through the service port, andthen recharge with the specified amount of gas froma gas cylinder.
Liquid side
Outdoor unit
3-wayvalve
Gas side
Indoor unit
2-wayvalve
Open
Clsed
Air purging
Service Manual 45
Troubleshooting Guide
• Procedure
(1) Confirm that both the 2-way and 3-way valvesare set to the open position. – Remove the valve stem caps and confirm that
the valve stems are in the raised position. – Be sure to use a hexagonal wrench to operate
the valve stems.
(2) Operate the unit for 10 to 15 minutes.
(3) Stop operation and wait for 3 minutes, thenconnect the charge set to the service port ofthe 3-way valve.– Connect the charge hose with the push pin to
the service port.
(4) Air purging of the charge hose.– Open the low-pressure valve on the charge set
slightly to air purge from the charge hose.
(5) Set the 2-way valve to the closed position.
(6) Operate the air conditioner at the coolingcycle and stop it when the gauge indicates1kg/cm2g.
(7) Immediately set the 3-way valve to the closedposition.– Do this quickly so that the gauge ends up indi-
cating 3 to 5kg/cm2g.
(8) Disconnect the charge set, and mount the 2-way and 3-way valve’s stem nuts and the ser-vice port nut. – Use torque wrench to tighten the service port
nut to a torque of 1.8 kg.m. – Be sure to check for gas leakage.
Lo
Closed
Purge the air
Outdoor unit
Indoor unit Liquid side
Gas side
CLOSE
Open2-Wayvalve
3-Wayvalve
CLOSE
Pumping Down
46 Room Air Conditioner
Troubleshooting Guide
Re-air Purging
(Re-installation)
• Procedure
(1) Confirm that both the liquid side valve and thegas side valve are set to the closed position.
(2) Connect the charge set and a gas cylinder tothe service port of the Gas side valve. – Leave the valve on the gas cylinder closed.
(3) Air purging. – Open the valves on the gas cylinder and the
charge set. Purge the air by loosening the flarenut on the liquid side valve approximately 45°for 3 seconds then closing it for 1 minute;repeat 3 times.
– After purging the air, use a torque wrench totighten the flare nut on liquid side valve.
(4) Check for gas leakage.– Check the flare connections for gas leakage.
(5) Discharge the refrigerant. – Close the valve on the gas cylinder and dis-
charge the refrigerant until the gauge indicates3 to 5 kg/cm2g.
(6) Disconnect the charge set and the gas cylin-der, and set the Liquid side and Gas sidevalves to the open position.– Be sure to use a hexagonal wrench to operate
the valve stems.
(7) Mount the valve stem nuts and the serviceport nut.– Use torque wrench to tighten the service port
nut to a torque of 1.8 kg.m.– Be sure to check for gas leakage.
CAUTION: Do not leak the gas in the airduring Air Purging.
Lo
Closed
OPEN
Closed
Gas cylinder
R22
Outdoor unit
Indoor unit Liquid side
Gas side
CLOSE
3-Wayvalve
3-Wayvalve
Service Manual 47
Troubleshooting Guide
Balance Refrigerant of the 3-way Valve(Gas leakage)
• Procedure
(1) Confirm that both the 2-way and 3-way valvesare set to the back seat.
(2) Connect the charge set to the 3-way valve’sport. – Leave the valve on the charge set closed. – Connect the charge hose to the service port.
(3) Open the valve (Lo side) on the charge set anddischarge the refrigerant until the gauge indi-cates 0 kg/cm2G.– If there is no air in the refrigerant cycle (the
pressure when the air conditioner is not runningis higher than 1 kg/cm2G), discharge the refrig-erant until the gauge indicates 0.5 to 1kg/cm2G. if this is the case, it will not be neces-sary to apply a evacuatin.
– Discharge the refrigerant gradually; if it is dis-charged too suddenly, the refrigeration oil willalso be discharged.
Lo
Open
Open3-Wayvalve
3-Wayvalve
Gas side
CLOSEOPEN
Outdoor unit
Liquid sideIndoor unit
48 Room Air Conditioner
Troubleshooting Guide
Evacuation
(All amount of refrigerant leaked)
• Procedure
(1) Connect the vacuum pump to the center hoseof charge set center hose
(2) Evacuation for approximately one hour. – Confirm that the gauge needle has moved
toward -76 cmHg (vacuum of 4 mmHg or less).
(3) Close the valve (Lo side) on the charge set,turn off the vacuum pump, and confirm thatthe gauge needle does not move (approxima-tely 5 minutes after turning off the vacuumpump).
(4) Disconnect the charge hose from the vacuumpump. – Vacuum pump oil.
If the vacuum pump oil becomes dirty ordepleted, replenish as needed.
Lo
Open
Open
Vacuum pump
3-Wayvalve
Outdoor unit
Liquid sideIndoor unit
Gas side
3-Wayvalve
CLOSEOPEN
Service Manual 49
Troubleshooting Guide
Gas Charging
(After Evacuation)
• Procedure
(1) Connect the charge hose to the chargingcylinder. – Connect the charge hose which you dis-con-
nected from the vacuum pump to the valve atthe bottom of the cylinder.
– If you are using a gas cylinder, also use ascale and reverse the cylinder so that the sys-tem can be charged with liquid.
(2) Purge the air from the charge hose. – Open the valve at the bottom of the cylinder
and press the check valve on the charge set topurge the air. (Be careful of the liquid refriger-ant). The procedure is the same if using a gascylinder.
(3) Open the valve (Lo side on the charge set andcharge the system with liquid refrigerant.– If the system can not be charged with the spec-
ified amount of refrigerant, it can be chargedwith a little at a time (approximately 150g eachtime) while operating the air conditioner in thecooling cycle; however, one time is not suffi-cient, wait approximately 1 minute and thenrepeat the procedure (pumping down-pin).
(4) Immediately disconnect the charge hose fromthe 3-way valve’s service port. – Stopping partway will allow the gas to be dis-
charged.– If the system has been charged with liquid
refrigerant while operating the air conditionerturn off the air conditioner before disconnectingthe hose.
(5) Mount the valve stem nuts and the serviceport nut. – Use torque wrench to tighten the service port
nut to a torque of 1.8 kg.m.– Be sure to check for gas leakage.
\
This is different from previous procedures.Because you are charging with liquid refrigerantfrom the gas side, absolutely do not attempt tocharge with larger amounts of liquid refrigerantwhile operating the air conditioner.
Lo
Chargingcylinder
Outdoor unit
Indoor unit Liquid side
Gas side
CLOSE
Open3-Wayvalve
3-Wayvalve
OPEN
Open
Check valve
(1)
50 Room Air Conditioner
Troubleshooting Guide
Trouble analysis
1. Check temperature difference between intake and discharge air and operating current.
Temp. Difference
Temp. difference : approx. 0°CCurrent : less than 80% of
rated current
Temp. difference : approx. 8°CCurrent : less than 80% of
rated current
Temp. difference : less than 8°CCurrent : over the reated
current
Temp. difference : over 8°C
Operating Current
• All amount of refrigerant leakedout. Check refrigeration cycle.
• Refrigerant leakegeClog of refrigeration cycleDefective compressor
• Excessive amount of refrigerant
• Normal
Temperature difference between intake and discharge air depends on room air humidity. When the room airhumidity is relativery higher, temperature difference is smaller. When the room air humidity is relatively lower tem-perature difference is larger.
2. Check temperature and pressure of refrigeration cycle.
1. The suction pressure is usually 8.5~9.5kg/cm2G(Cooling) at normal condition. 2. The temperature can be measured by attaching the thermometer to the low pressure tubing and wrap it with
putty.
NOTICE
NOTICE
Suction pressure Temperature(Compared with (Compared with Cause of Trouble Description
the normal value) the normal valve)
Defective compressor Current is low.Defective 4-way reverse valve
Excessive amount of High pressure does not quicklyNormal refrigerant rise at the beginning of
operation.
Insufficient amount of Current is low.Lower Higher refrigerant (Leakage)
Clogging Current is low.
High
Higher
Cycle Parts
Service Manual 51
Troubleshooting Guide
Self diagnosis Function
1 time 1time
3 sec
2 times 2 times
3 sec
4 times 4 times
3 sec
5times 5times
3 sec
6times 6times
3 sec
7times 7times
3 sec
3 sec
3 sec
2 times
3 sec
2 times
3 sec
1time
3 sec
1time
3 sec
1time
3 sec
1time 2times
1time
1time 1time4 times 4 times
1time3 times 3 times
1time
1
2
4
5
6
7
Error IndicatorErrorCode
Cause of Error DisplayIndoor Outdoor
IndoorOperation
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
• Indoor Temp. sensor error - Sensor open or short
• Heat Sink sensor error - Sensor open or short - Heat Sink temp is over 95°…
• Communication error
• Outdoor Temp. sensor error - Sensor open or short
• DC Peak error
• Over current error (CT2)
ON
ON
ON
OFF
SHUTDOWN
SHUTDOWN
9times 9times
3 sec
10 times 10 times
3 sec
3 sec
3 sec
3 sec
3 sec
2times
10 ON
• Outdoor fan lock error
• D-Pipe TH. is short or open.
(BLDC fan model only)OFF
8times 8times
3 sec8
• Indoor fan lock error (BLDC fan model only) OFF
9
O
O
O14 ON
• PSC Error - PSC Fault Error
• Comp Phase Current Error (180 Driver Comp Control Model Only)
ON
12• EEPROM Error - EEPROM Check sum Error
ON
13
52 Room Air Conditioner
1. Error indicator of air conditioner1) Indoor : Operating LED / Outdoor : LED01M(Red) on the outdoor PCB 2) 2 more errors occur at same time
- Air conditioner Off condition : Display the error code of product off cause - Air conditioner On condition : Display the prior Error Code
2. Cancellation of Error indicator1) Error Code 1, 2, 3, 4, 10 : Error indicator canceled when cause of error recovered2) Error Code 5, 8, 9 : Keep displaying Error indicator by restarting air conditioner,
although cause of error recovered3) Error Code 6, 7 : Error indicator canceled when power reset (Power Cord Off & On)
Troubleshooting Guide
Precaution in Service or CheckEven after stopping the operation of product, it takes some time to discharge the remaining electricity of theelectrolytic capacitor that was charged. Before starting a checking or repairing job, pull out the plug out of theoutlet and make sure that the lamp on the control board outdoor unit is off.
The Diagnosis Procedure
Check the supplied voltage to product (AC 220V/230V ± 30V).
Check the connecting cable between Indoor and Outdoor.
Check the blinking number of operation indicator (refer to the self-diagnosis function).
Check the self-diagnosis table
• Check the condition of connectors• The condition of P.C.B pattern.
• Check the condition of connectors.• The condition of P.C.B pattern.• The electronic components.
Indoor Outdoor
Service Manual 53
Troubleshooting Guide
Electronic Parts
Refer to electronic contorol device drawing & schematic diagram.
The Product doesn’t operate at all.
Turn off the main power and wait to 10 seconds
Turn on the main power again.
Does "Beeping" sound is made from the indoor unit?
• Primarily, the operating condi-tion of Micom is O.K.
• Check CN-DISP1CN-DISP2 of indoor PCB
Check the voltage of power(AC220V/AC240V, 50Hz).
• The voltage of main power.• The voltage applied to the unit.• The connecting method of Indoor/Outdoor connecting cable (each color)• The P.C.B. Ass'y(Fuse, Noise Filter, Power Module, Bridge Diode, etc.)
Trouble 1
NO YES
The operation check of the Indoor P.C.B. Ass'y
Procedure
1) The input voltage of power mod-ule.
2) The output voltage of power mod-ule.
4) IC04D(7805)
5) IC01A(KIA7036)
Specification
1) AC230V ± 30V: Check the rated voltage
2) 12V ± 3V
4) DC5V
5) The voltage of micom pin 19 : DC4.5V↑
Remedy
1) Check the power outlet.
2) Replace P.C.B Ass'y
4) Replace P.C.B Ass'y
5) Replace P.C.B Ass'y
54 Room Air Conditioner
Troubleshooting Guide
Turn on main power.
While the compressor has been stopped, the compressor does not operate owing to the delaying function for 2 minutes after stopped.
When the compressor stopped Indoor Fan is driven by a low speed.At this point the wind speed is not controlled by the remote controller.
(When operated in the Sleeping Mode, the wind speed is set to the low speed as force).)
Caused by the remote controller. Caused by other parts except the remote controller
When the mark ( ) is displayed in LCDscreen, replace battery.
Check the contact of CN-DISP 1, 2 connector
Check DISP P.C.B Ass'y -Voltage between CN-DISP1 - : DC +5V
Check point• Check the connecting circuit between
MICOM PIN and CN-DISP1 PIN • Check receiver ass'y
Product doesn't operate with the remote controller.Trouble 2
Service Manual 55
Troubleshooting Guide
Troubleshooting for error code
Description Cause of error
1• Indoor TH. (sensor) is short or open• Indoor TH. (sensor) is not connected to the indoor pcb assembly• Damage or defect on the sensing circuit of indoor pcb assembly. (R01H, R02H, R03H, R04H, C01H, C02H)
Indoor TH. is short oropen
Indoor TH. is connected to Indoor pcb assembly ?
Indoor TH. is right ?
YES
No
- Connect to CN-TH1 in indoor pcb assembly
Sensing circuit of indoorpcb is right ?
No
Check Indoor TH.- Measure resistance of TH. (air : about 10k Ω at 25 °C, pipe : about 5k Ω at 25 °C)
YES
No
- Check soldering state of R01H ~ R04H, C01H, C02H
Check flow
2• Outdoor TH. (sensor) is short or open• Outdoor TH. (sensor) is not connected to the outdoor pcb assembly• Damage or defect on the sensing circuit of outdoor pcb assembly. (R03H~R06H, C02H, C03H)
Outdoor TH. is short oropen
DescriptionError code
Error code
Cause of error
Outdoor TH. is connected to outdoor pcb assembly ?
Outdoor TH. is right ?
YES
No
- Connect to CN-TH1 in outdoor pcb assembly
Sensing circuit of outdoorpcb is right ?
No
Check outdoor TH.- Measure resistance of TH. (air : about 10k Ω at 25 °C, pipe : about 5k Ω at 25 °C)
YES
No
- Check soldering state of R03H ~ R06H, C02H, C03H
Check flow
56 Room Air Conditioner
Troubleshooting Guide
• 9K / 12K
4
• Heat-sink TH. is damaged(short or open).
• Heat-sink Temp. is over 95°C
• Damage or defect on the sensing circuit of outdoor pcb assembly. (R01H, R02H, C01H)
Heat-sink Temp. is over95°CHeat-sink TH.is open or short
Heat-sink TH. in INV-IC isRight ?
Sensing circuit of outdoorpcb is right ?
YES
No
Check heat-sink TH. - Measure resistance of TH. (about 10k Ω at 25 °C)
Heat-sink TH is connected to outdoor PCB assembly?
YES
No
- Connect to CN-TH2 in outdoor PCB assembly
No
- Check soldering state of R01H, R02H, C01H
Check flow
Description Cause of errorError code
Service Manual 57
Troubleshooting Guide
5
• Wrong or missing wiring between indoor and outdoor unit cable• Defect of communication components in indoor pcb assembly• Defect of communication components in outdoor pcb assembly• Defect of power supply components in outdoor pcb assembly• No ground connection in air conditioner unit (affected by noise in power source)
Communication Error
Wiring connectionIs right ?
Is the voltage of T/Block, in outdoor about
AC 220/240V ?
YES
No
Indoor Outdoor 1(BR) 1(BR) 2(BL) 2(BL)3(GN/YL) 3(GN/YL) 4(RD) 4(RD)
No
Check power connectorIs not connected to theT/Block in indoor unit.
Check flow
Is the voltage of GND & DC5V in Outdoor pcb about DC 5V ?
YES
No
Check FUSE, NF01/02J, PTC,Power Module, BD-01S in Outdoor pcb assembly
Communication circuit of indoor& outdoor pcb Is right ?
YES
No
Check IC01K, IC02K,D01K~D03K,ZD01K~ZD03K, R01K~R10K,C01K~C04K
Ground connection is installed ?(power outlet or outdoor chassis)
YES
No
Install ground connection from outdoorunit. (In case power outlet has no earthport)
Earth port
Description Cause of errorError code
58 Room Air Conditioner
Troubleshooting Guide
Cause of error
6
• Supplied power is not normal• Comp Connector (CN-U,V,W) is disconnected or inserted to wrong position• Compressor is damaged (coil short) replace compressor• Too much Refrigerant• Defect in outdoor pcb assembly replace pcb assembly
DC Peak Error
Supplied voltage toOutdoor pcb is aboutAC 220/240V ?
Is connector (CN-U,V,W)connected to compressor and inserted to pcb in right position ?
YES
No
Check power source
No
Check CN-U,V,W connector(U : RD, V : BL, W : YL)
Check flow
Refrigerant pressure is right ?
YES
No
Check refrigerant pressureand adjust.
Is the compressor right ?
YES
No
Check resistance Between U-V, V-W, U-W port.
→ Short / Open circuit (Comp.motor coil error) → normal : 1 ~2 Ω
Between U,V,W and Body °Ê normal : over10M Ω
Inverter components in outdoor pcb assembly areright ?
YES
No
* 9 K/12K ModelCheck
Short of SPM3 pins (GND - P, U, V, W pin) Direction of D01Z~D03Z, C08Z,10Z,12Z,16Z Assembling state of R01P ~ R21P & IC01P Assembling state of screw between INV-IC &
Heat-sink DC 15V output of Power module.
* 18 K ModelCheck
Short of SPM2 pins (GND – P, U, V, W pin) Direction of D01Z~D03Z, C08Z,10Z,12Z,16Z Assembling state of R01P ~ R21P & IC01P Assembling state of screw between INV-IC &
Heat-sink DC 15V output of Power module.
V
U
W
Ω
Description Cause of errorError code
Service Manual 59
Troubleshooting Guide
7• Supplied power is not normal• Indoor/outdoor fan is locked• Too much refrigerant• Defect in current sensing circuit in outdoor pcb assembly
Over current Error(CT2)
Supplied voltage toOutdoor pcb is aboutAC 220/240V ?
Does indoor / outdoor fan worknormally ?
YES
No
Check power source
No
Check indoor / outdoor fan andadjust.
Check flow
Refrigerant pressure is right ?
YES
No
Check refrigerant pressureand adjust.
Current sensing circuit is right ?
YES
No
Check current sensing circuit.- check CT is damaged in outdoor pcb
(output wire is disconnected to pin or not)- BD01N is inserted in right position
(refer marking on pcb and component)- Spec of R01N (1kΩ), R02N (1.65kΩ) is correct- Direction of diode (D01N, D02N) is right
Description Cause of errorError code
60 Room Air Conditioner
Troubleshooting Guide
8• Indoor fan is locked or separated• Fan connector is not connected to indoor pcb assembly• Defective in DC-fan driving circuit
Indoor fan is locked(BLDC fan model only)
Indoor fan is rotating ? (1) Indoor fan is rotating ? (2)
YES
No
Check indoor unit- remove obstacles in indoor unit- fan assembled correctly.
No
Check soldering state of CN-Motor1 & assemblingstate of DC Fan connector
Check flow
DC–fan driving circuit is right ?
YES
No
Check DC Fan Driving circuit(Soldering state & Direction)- R01F~R09F, C01F~C03F, IC01F~IC03F, Q01F~Q02F, ZD01F
9• Outdoor fan is locked by an obstacle (ex : branch of tree, bar…etc)• Fan connector is not connected to outdoor pcb assembly• Defective in DC-fan driving circuit
Outdoor fan is locked(BLDC fan model only)
Outdoor fan is rotating ? (1) Outdoor fan is rotating ? (2)
YES
No
Check outdoor unit- remove obstacles in outdoor unit
No
Check connector is not connected to outdoor pcbassembly (CN-FAN2)
Check flow
DC–fan driving circuit is right ?
YES
No
Check DC Fan driving circuit(Soldering state & Direction)- R01F~R05F, C01F~C03F, Q01F~Q04F, ZD01F
Description Cause of errorError code
Description Cause of errorError code
Service Manual 61
Troubleshooting Guide
10• D_pipe TH. is short or open • D_pipe TH. is not connected to the outdoor pcb assembly• Damage or defect on the sensing circuit of outdoor pcb assembly
D-Pipe TH. is short oropen
D_PIPE TH. is connected toOutdoor pcb assembly ?
D_PIPE TH. is right ?
YES
No
Connect to CN-D_PIPE in outdoor pcb assembly
Sensing circuit of outdoorpcb is right ?
No
Check D_PIPE TH.- Measure resistance of TH. (about 200kΩ at 25°C.)
YES
No
- Check soldering state of R07H, R08H, C04H
Check flow
Description Cause of errorError code
62 Room Air Conditioner
Wiring Diagram
Schematic Diagram
Indoor Unit Models: ASNW096F1E/V/GG0, ASNW126F1E/V/GG0
Schematic Diagram
Service Manual 63
Schematic Diagram
Outdoor Unit Models: ASUW096FUG0, ASUW126FUG0
64 Room Air Conditioner
Schematic Diagram
Components Location
• BOTTOM VIEW
INDOOR
MAIN P.W.B ASSEMBLY (AC PART)• TOP VIEW
TRANS01Y
C03Y
C02L
CN-ACDC2
D02Y
U05Y
R03K
R01K
C01Y
L3R01E
C08F
R06YC04YD01Y
C08Y
VR01Y U01Y
R02Y
R04YC07Y
C05Y
C02Y
U02Y
R04C
R03C
C10B
C02C
R02C
C09B
C08B
C07B
Q01C
U03Y
R06F
R03Y
R01Y
LED1 R
07Y
C06Y
CN_COM
ZNR01YEEPROM
C03A C02A
U04Y
IC01A
R08Y
C09Y
R02K
R01C
C01C
R01A
R03A
R02A
1
10
C01A
CN-HVBC01K
R10D
R08D
R03N
R02L
C01L
C15BCN-L/R2(WH)
CN-L/R1(WH)
C02M
IC02M
CN-U/D(BL)C16B
L4BZ01E
C06B
C05B
R02E
L5R07F
R04F
R02N
C13H
R01B
R07N
R03P
R02P
C01P
R01P
C01X
C12B
60 50
20 30
IC03M
OR01H
R08H
OSC01B
40
OR02H
R07H
C11B
C14B
C13B
MIC
OM
R01N
C03L
C06H
C05H
C04H
CN_OPTION
R04H
C03H
C01M R
03HIC01M
R02H C
N-TH2
R06H
C02H
R05H
C01H C
N-TH1
R05Y
R03F
R01H C
02F
R05F
C01F
CN_D2
C03M
R01T R11HR01L
CN-LEV
C02B
R12H
C04B
C03B
C01B
R01F
R02F
CN-CC
U04Y
CN-ACDC2
C03
Y
VR
01Y
C04
Y
C02L
U02YTRANS01Y U03Y
L3
Q01C
CN-L/R1(WH)
CN-U/D(BL)
LED1
CN-L/R2(WH)
PCB ASM : 6871A20920
C02A
CN_COM
IC01A
EEPROM
OS
C01
B
L5L4
CN-HVBBZ01E C03L
CN_D2
CN
-CC
PW
B :
6870
A90
728
A
CN
_OP
TIO
N
CN
-TH
1C
N-T
H2
CN-LEV
1
1
1
Service Manual 65
Schematic Diagram
• BOTTOM VIEW
INDOOR
MAIN P.W.B ASSEMBLY (DC PART)• TOP VIEW
CN-DISP
VOUT
GND
PCB ASM:6871A20921
PWB:6870A90729 A
RE
CE
IVE
R
R01A
C01A
66 Room Air Conditioner
Schematic Diagram
DISPLAY ASSEMBLY
• TOP VIEW
PWB ASSEMBLY SUB• TOP VIEW
CN-SW(BL)CN-D7
CN-D8
1
CN-D6
1
11
C02V
C01V
CN-D3
CN-CON(WH)
1
CN-D1
1
1
1
CN-12V(WH)
1
CN-D4
1
PWB ASM:6871A20363
CN-D5
1
1
CN-D61
CN-D7
1
1
CN-D8
1
C01
VC
02V
CN-SW(BL)
CN-D3
CN-D1
1
1
CN-CON(WH)
1
CN-D2
CN-12V(WH)
1
PWB:6870A90126B
1
CN-D4
PWB ASM:6871A20363
CN-D5
1
Service Manual 67
Schematic Diagram
BL/WH
D02NC03F
D01
Y
7
6
SPM3 : 6002EC2005
1
SPM3
C16Z
C02D C03
D
C01D
21
1 53
POWER MODULE
L1
R01D
C19Z
R14Z
R16Z
R08Z
R09Z
D03Z
R11Z
15
R15Z13
11
9
5
C12Z
C08S
D01Z
R07Z
D02Z
C08Z
20
17
C10Z
2625
2422
23
RD-U
BL-V
13 12 9 8
R18ZR19Z
R17Z
27
YL-W R02
Y
R01YCN-FAN2
C06D
CN
_S/V
ALV
E2CN
_S/V
ALV
E1
CN
-Fla
sh W
riter
CN-LEV
IC01D
CN-D/AC05H
C04D
C05D
C01HC08B
EE
PR
OM
IC02
M
WCN-NOISE2RDWCN-NOISE3BR/BK
R06
K
R07
K
D03K
C09J
R05
K
C01J C02J
FU
SE
C02S
OS
C01
BIC
01A
C06B
1
C01
Y
CN
-FLA
SH
R03
Y
CN-PC
TEST POINT
C04B
C03H
CN-TH1
C02HC02F
ZD
01F
CN-D_PIPE
C04H C02A
CN-TEST
R09K
R08
K
D01
K
ZD
03K
IC01K
IC02K
C03J C04J
NF01J
ZNR01J
D02K
ZD02K
C03K
C04K
LED
01M
R10K
ZD01K
J25
J24
J26
J27
J23
CN
-CO
IL29
PSC_Module
2423
2122
111
5
9
R02S
2726
2005.01.06
2015
17
2513
C03S
R03
S J03
J02
C01M
J01
J05
J07J06
J04
J08
PCB : 6870A90055Q_1(050106)
Assy : 6871A10135
J20
J21
J22
J19
CT
+J09
J14
J15
J11
J12
J10
J13
J16
RY
-H/P
UM
P
CN
-CO
IL1
C01S RY
-4W
AY
RY-PUMP
BD
01N
IC01
C
D01
N
C01N
-
R01N
R02N
C05J
RY-PWR
D01
C
R01
C
D02
C
R02
C
~~
J17
J18
4
C07J
CN-FAN1/PUMP
CN-4WAYCN-PUMPPTC
3
C08J
WC
N-N
OIS
E1
SU
RG
E
ZNR02J
R01J
J29
J28
J32
J30
J31
R03
J
R02
J
NF02J
C06J
D02N
R02
X
C01K
CN
_S/V
ALV
E2
CN
-Fla
sh W
riter
R05
K
WCN-NOISE3BL/WH
C08J
C02J
WCN-NOISE2
BR/BKCN-LEV
RD
R07
K
R06
K
FU
SE
C01J
R03
K
C09J
D03KIC02M
C08B
NF01J
C04J
R01J
SU
RG
E
WC
N-N
OIS
E1
ZNR02J
J28
R02
J
J29
J32
J31
J30
R03
J
C02
K
C03J C03K
ZD
03K
D01
K
R08K
ZNR01J
R09K
1
CN
_S/V
ALV
E1
R02
K
R04
K
IC01K
R01
K
IC02K
IC01M
R10K
J23
D02K
ZD02K
J25
J27
J26
J24
R01
M
ZD01K
16
LED
01M
C04K
R03
B
POWER MODULE
R04
C
R06
S
R23
P
R22
P
R24
P
R13
Z
CN-D/A
EEPROM
C02
YR03
N
C02
BC
02N
C10
S
C01
C
C01
LR
01L
C18
Z
C01
FR
01F
R04
YR
02B
C09
B
-80
R02
L
C05H
IC01
D
C03
D
C02D
R07
H
R03
HR
01H
R05
H
C04DC01
H
C05D
C04
P
C03
P
C02
P
R21
P
R19
P
R20
P
R06
P
R03
P
C01
P
R18
PR
07P
R04
PR
16P
C05
P
R17
ZR
02P
R17
PR
05P
R01D
L1 C01D
R01
P
R25
ZR
06Z
R23
ZR
24Z
R04
ZR
05Z
27
IC01P
R01Y
R03X
IC01
AC
01B
R02
HR
04B
OS
C01
B
TEST POINT
C04
BR
01B
C03
B
R05
B
C01
X
C05
B
R01
A
C01
A
R06
B
MIC
OM
C07
B
R04
X
Q03
FC
06B
R06
H
R04
H
R08
H
Q01
F
CN
-FLA
SH
C01
Y
R05
F
R03
Y
C02H
Q02
F
R01W
C03H
R02
A
R03
A
C02A
CN-TH1CN-TEST
R01
X
C02X
R05
X
CN-PC
ZD
01F
R04
F
C03F
CN-FAN2
R02
Y
R02
FD
01Y
C04H
CN-D_PIPE
R03
F
Q04
F
C02F
BL-
VR
D-U
R11
PR
09P
R13
PR
14P
R08
P
R19
ZR
18Z
R14Z
R12
PR
10P
R15
P
R15Z
YL-
W
C06D
SPM3
R16Z
C19Z
CN-4WAY
J22
NF02J
C06J
PTC
C07J
BD01N
IC01
C
C05J
C01N
R01N
D01N
R02N
R03
C
RY-PWR
J18
J19
J20
J21
J17
D02
C
CT
+
D01
CR
01C
R02
C
J09
J10
J16
J11
J13
J12
C02S
C01S
J15
J14
RY
-4W
AY
RY
-H/P
UM
P
RY
-PU
MP
CN
-CO
IL1
C03S
R03
S
CN
-CO
IL2
J08
J07
J06
J01
J04
J03
J02
J05
CN-PUMP
CN-FAN1/PUMP
C01M
HEATSINK
R12
Z
R22
Z
R21
Z
R20
Z
C04
Z
C05
Z
C06
Z
R03
Z
R02
Z
R01
Z
C16Z
C15
Z
C10Z R08Z
C12Z
C01
Z
C11
Z
D03Z
R09Z
C13
Z
C14
Z
C03
Z
C17
Z
C02
Z
R11Z
C08Z
C07
ZC
09Z
C08S
D01Z
R07Z
D02Z
C05
S
R04
S
C06
S
R01
S
C07
SC
09S
R05
SC
04S
R02S
• TOP VIEW
• BOTTOM VIEW
Outdoor Unit
68 Room Air Conditioner
Product Specifications
Product Specifications Model Name
Item UnitW
MIN kcal/h.(W)Btu/h.
WCooling Capacity Type kcal/h.(W)
Btu/h.W
Max kcal/h.(W)Btu/h.
WMIN kcal/h.(W)
Btu/h.W
Heating Capacity Type kcal/h.(W)Btu/h.
WMax kcal/h.(W)
Btu/h.Power Input Cooling W
Heating WRunning Current Cooling A
Heating AStarting Current Cooling A
Heating ACooling kcal/hW
EER Btu/h.WHeating kcal/hW
Btu/h.WCOP Cooling W/W
Heating W/WPower Supply Ø,V,HzPower Factor %Air Circulation Indoor,Max m3/min(CFM)
Outdoor,Max m3/min(CFM)Moisture Removal l/h.(pts/h.)Noise Level Indoor,High dB(A)±3(Sound Med. dB(A)±3Pressure,1m) Low dB(A)±3
Outdoor,Max dB(A)±3Refrigerant(R410A)ChargeCircuit Breaker APower Cord AWG#:P*mm2
Connecting Cable AWG#:P*mm2
Connecting Tube Liquid Side mm(in)(Ø. Socket Flare) Gas Side mm(in)
Length,std m(in)Drain Hose (O.D , I.D) mm(in)
Indoor mmDimension inch(W*H*D) Outdoor mm
inchNet Weight Indoor kg(lbs)
Outdoor kg(lbs)Stuffing With S/Parts 20/40ftQuantity Without S/Parts 20/40ft
1,118 1,118 1,300 1,300 4,436 4,436 2,321 3,009 2,700 3,500 9,212 11,942 3,009 3,439 3,500 4,000
11,942 13,648 1,118 1,118 1,300 1,300 4,436 4,436 3,009 3,611 3,500 4,200
11,942 14,330 3,611 4,299 4,200 5,000
14,330 17,060 830 1090 960 1160 3.8 4.94.4 5.24.5 5.75.2 6.92.80 2.76 11.10 10.96 3.1 3.1 12.4 12.4 3.25 3.21 3.65 3.62
1,220-240,50 1,220-240,5099.0% 98.7
7(247) / 8.0(283) 9.5(335) / 10.5(371)29(1024) 29(1024)1.2(2.5) 1.5(3.2)42/43 42/43
36 3623 2548 48
1,000 1,00015 15
16:3*1.0 16:3*1.016:4*1.0 16:4*1.06.35(1/4) 6.35(1/4)9.52(3/8) 9.52(3/8)7.5(295) 7.5(295)
21.5,16.0(0.85,0.63) 21.5,16.0(0.85,0.63)600*600*146 600*600*14623.6*23.6*5.7 23.6*23.6*5.7770*545*245 770*545*24530.3*21.3*9.6 30.3*21.3*9.6
14(30.9) 14(30.9)38(83.8) 38(83.8)88 / 196 88 / 19689 / 198 89 / 198
AS-W096F1/E/V/GG0 AS-W126F1/E/V/GG0
Service Manual 69
Exploded View
Exploded View
352150
35211B
354210
135515
134210
135316
268711-1
152302135090
268711-2
135500-2
145200-1
146811-2
135500-1
264110266090
268711-4
268711-3
249951
159830
330870
267110
733010
349600
346810
359012352380
147581
145200-2
146811-1
263230
Indoor Unit
70 Room Air Conditioner
Exploded View
Outdoor Unit Model:ASUW096FUG0, ASUW126FUG0
554031
435511-1
437212
554160
561410
552202
552116
55211G
661400
W6631
550140 552203-1
552203-2
430410
649950
435511-2
552200
437211
435301
559010
546810
549610
261704
447910
263230-3
263230-4
268711
Service Manual 71
Replacement Parts List
Indoor Unit
NOTE) *Please ensure GCSC since these parts may be changed depending upon the buyer's request.(GCSC WEBSITE http://biz.LGservice.com)
131410 Chassis Assembly 3141A20037C 3141A20037C R
135090 Decor Assembly ACW30774001 ACW30774001 R
135316 Grille Assembly, Front(Indoor) 1(Kiss) 3531A20319B 3531A20319B R
E(Red) 3531A20331A 3531A20331A R
V(Silver) 3531A20331B 3531A20331B R
G(Gold) 3531A20331C 3531A20331C R
135515 Cover Assembly, Top(Indoor) 3551A20225B 3551A20225B R
147581 Louver, Horizontal 4758A20098A 4758A20098A R
152302 Filter, Air 5230A20069B 5230A20069B R
159830 Filter Assembly, Air Cleaner 5983A25015A 5983A25015A R
249951 Case Assembly, Control(Indoor) 4995A20653G 4995A20653E R
263230 Thermistor, NTC 6323A20004T 6323A20004T R
264110 Power Cord Assembly 6411A20014S 6411A20014S R
266090 HVPS, DC/DC 6609A10008B 6609A10008B R
267110 Remote Controller Assembly 6711A20073U 6711A20073U R
268711-1 PCB Assembly 1(Kiss) 6871A20921A 6871A20921A R
E/V/G(Red/Silver/Gold) 6871A20921B 6871A20921B R
268711-2 PCB Assembly, Sub 6871A20363G 6871A20363G R
330870 Pan Assembly, Drain 3087A30009B 3087A30009B R
346810 Motor, Unclassified 4681A20091A 4681A20091A R
349600 Bracket, Motor 4960A20016A 4960A20016A R
352150 Hose Assembly, Drain 5251AR1222R 5251AR1222R R
352380 Guide, Air 5238A20046A 5238A20046A R
354210 Evaporator Assembly, First 5421A20265A 5421A20265A R
359012 Fan, Turbo ALUMINUM 5900A20063A 5900A20063A R
SA 5900A20063B 5900A20063B R
135500-1 Cover 3550A20511A 3550A20511A R
135500-2 Cover 3550A20510A 3550A20510A R
146811-1 Motor Assembly, DC, Stepping 4681A20055A 4681A20055A R
146811-2 Motor Assembly, DC, Stepping 4681AP2968M 4681AP2968M R
268711-3 PCB Assembly, Main 6871A20919B 6871A20919B R
268711-4 PCB Assembly, Main 6871A20920C 6871A20920B R
35211B Tube Assembly, Tubing 5211A21789A 5211A21789A R
145200-1 Link 4520A30097A 4520A30097A R
145200-2 Link 4520A30098A 4520A30098A R
DESCRIPTIONLOCATION
No.REMARKS
PART No.
ASNW096F1/E/V/GG0 ASNW126F1/E/V/GG0
Replacement Parts List
72 Room Air Conditioner
Replacement Parts List
430410 Base Assembly,Outdoor 3041A20066A 3041A20066A R
435301 Grille,Discharge 3530A20006G 3530A20006G R
437211 Panel Assembly,Front(Outdoor) 3721A20027S 3721A20027S R
437212 Panel Assembly,Rear(Outdoor) 3721A20026Z 3721A20026Z R
447910 Barrier Assembly,Outdoor 4791A30002R 4791A30002R R
546810 Motor,Unclassified 4681A20122A 4681A20122A R
549610 Bracket Assembly,Motor(Outdoor) 4961A10015B 4961A10015B R
550140 Damper,Compressor 4H00982E 4H00982E R
552116 Tube Assembly,Reverse 5211A24134B 5211A24134B R
552200 Valve,Expansion Body 5220A90001F 5220A90001F R
552202 Valve,Reverse 5220AR3228D 5220AR3228D R
554031 Condenser Assembly,Bending 5403A20221B 5403A20221B R
554160 Compressor 5416A90029C 5416A90029C R
559010 Fan Assembly,Propeller 5901A10033A 5901A10033A R
561410 Solenoid 6141A20010S 6141A20010S R
661400 Coil 6141A30003B 6141A30003B R
649950 Case Assembly,Control(Outdoor) 4995A20520N 4995A20520M R
261704 Transformer,Reactor 7A 5874A90003J 5874A90003J R
9A 5874A90003E 5874A90003E R
268711 PCB Assembly,Main 6871A10135N 6871A10135M R
263230-1 Thermistor Assembly 6323A20001B 6323A20001B R
263230-2 Thermistor,NTC 6323A20003G 6323A20003G R
435511-1 Cover Assembly,Control(Outdoor) 3551A30115G 3551A30115G R
435511-2 Cover 4994A20108A 4994A20108A R
55211G Tube Assembly,Expansion 5211A22520B 5211A22520B R
552203-1 Valve,Service 5220A20005B 5220A20005B R
552203-2 Valve,Service 5220A20001Q 5220A20001Q R
W6631 Harness,Single 6631A30099D 6631A30099D R
DESCRIPTIONLOCATION
No.REMARKS
PART No.
ASUW096FUG0 ASUW126FUG0
Outdoor Unit
NOTE) *Please ensure GCSC since these parts may be changed depending upon the buyer's request.(GCSC WEBSITE http://biz.LGservice.com)
P/No.: 3828A20926AApril, 2006
Printed in Korea