MULTI SPLIT TYPE AIR CONDITIONER - skynet.beusers.skynet.be/loc10/pdf_loc_10/techn_info/mcquay_manual/005 MUL… · multi split type air conditioner installation manual oyl manufacturing

MULTI SPLIT TYPE AIR CONDITIONER

INSTALLATIONMANUAL

OYL MANUFACTURING COMPANY SDN. BHD.

JALAN PENGAPIT 15/19, P.O. BOX 7072, 40702 SHAH ALAM, SELANGOR DARUL EHSAN, MALAYSIA.

• In the event that there is any conflict in the interpretation of this manual and any translation of the same in any language,the English version of this manual shall prevail.

• The manufacturer reserves the right to revise any of the specification and design contain herein at any time without priornotification.

• En cas de désaccord sur l’interprétation de ce manuel ou une de ses traductions, la version anglaise fera autorité.

• Le fabriquant se réserve le droit de modifier à tout moment et sans préavis la conception et les caractéristiques techniquesdes appareils présentés dans ce manuel.

• Im Falle einer widersprüchlichen Auslegung der vorliegenden Anleitung bzw. einer ihrer Übersetzungen gilt die Ausführungin Englisch.

• Änderungen von Design und technischen Merkmalen der in dieser Anleitung beschriebenen Geräte bleiben dem Herstellerjederzeit vorbehalten.

• Nel caso ci fossero conflitti nell’interpretazione di questo manuale o delle sue stesse traduzioni in altre lingue, la versionein lingua inglese prevale.

• Il fabbricante mantiene il diritto di cambiare qualsiasi specificazione e disegno contenuti qui senza precedente notifica.

• En caso de conflicto en la interpretación de este manual, y en su traducción a cualquier idioma, prevalecerá la versióninglesa.

• El fabricante se reserva el derecho a modificar cualquiera de las especificaciones y diseños contenidos en el presentemanual en cualquier momento y sin notificación previa.

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This manual provides the procedures of installation to ensure a safe and good standard of operation for the airconditioner unit.Special adjustment may be necessary to suit local requirements.

Before using your air conditioner, please read this instruction manual carefully and keep it for future reference.

INSTALLATION MANUAL

MULTI SPLIT TYPE AIR CONDITIONER

MODEL

INDOOR UNIT

Reference Model Model

WMS10E AWMS10E / MWMS010E / YWMS10EWMS10F AWMS10F / MWMS010F / YWMS10F

WMS15F AWMS15F / MWMS015F / YWMS15FWMS20C AWMS20C / MWMS020C / YWMS20CWMS20F AWMS20F / MWMS020F / YWMS20F

INDOOR UNIT


WMS10ER AWMS10ER / MWMS010ER / YWMS10ER

WMS10FR AWMS10FR / MWMS015FR / YWMS15FRWMS15FR AWMS15FR / MWMS015FR / YWMS15FRWMS20CR AWMS20CR / MWMS020CR / YWMS20CRWMS20FR AWMS20FR / MWMS020FR / YWMS20FR

Part No.:A08019013029

COOLING UNIT


MSD1010A AMSD1010A / MMSD1010A / YMSD1010AMSD1015A AMSD1015A / MMSD1015A / YMSD1015AMSD1515A AMSD1515A / MMSD1515A / YMSD1515A

MSD1020A AMSD1020A / MMSD1020A / YMSD1020AMSD1520A AMSD1520A / MMSD1520A / YMSD1520AMSD2020A AMSD2020A / MMSD2020A / YMSD2020A

MST101010A AMST101010A / MMST101010A / YMST101010AMST101015A AMST101015A / MMST101015A / YMST101015AMST101515A AMST101515A / MMST101515A / YMST101515A

MST151515A AMST151515A / MMST151515A / YMST151515AMST101020A AMST101020A / MMST101020A / YMST101020A

HEAT PUMP UNIT


MSD1010AR AMSD1010AR / MMSD1010AR / YMSD1010ARMSD1015AR AMSD1015AR / MMSD1015AR / YMSD1015AR

MSD1515AR AMSD1515AR / MMSD1515AR / YMSD1515ARMSD1520AR AMSD1520AR / MMSD1520AR / YMSD1520AR

IM-MSDT-0501

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CONTENTS

Before installing the air conditioner unit, please read the following safety precautions carefully.

SAFETY PRECAUTIONS

! Warning• Installation and maintenance should be performed by qualified persons who are familiar with local code and

regulation, and experienced with this type of appliance.

• All field wiring must be installed in accordance with the national wiring regulation.

• Ensure that the rated voltage of the unit corresponds to that of the name plate before commencing wiring workaccording to the wiring diagram.

• The unit must be GROUNDED to prevent possible hazard due to insulation failure.

• All electrical wiring must not touch the refrigerant piping, compressor and any moving parts of the fan motors.

• Confirm that the unit has been switched OFF before installing or servicing the unit.

IMPORTANTDO NOT INSTALL OR USE THE AIR CONDITIONER UNIT IN A LAUNDRY ROOM.

- Outline And Dimensions page i-ii- Safety Precautions page 2- Installation Diagram page 3- Installation Of Outdoor Unit page 3- Installation Of Indoor Unit page 3- Refrigerant Piping page 4- Electrical Wiring Connection page 6- Vacuuming and Charging page 7- Indicator Light page 7- Air Conditioner Unit Operation page 11- Standard Operating Conditions page 11- Service And Maintenance page 12- Trouble Shooting page 12

! Caution

Please take note of the following important points when installing.

• Do not install the unit where leakage of flammable gas may occur.

If gas leaks and accumulates at the surrounding area of the unit, it may cause fire ignition.

• Ensure that the drainage piping is connected properly.

If the drainage piping is not connected properly, it may cause water leakage which will dampen thefurniture.

• Do not overcharge the unit.

This unit is factory pre-charged. Overcharge will cause over-current or damage to the compressor.

• Ensure that the unit panel is covered back after service or installation.

Unsecured panel will cause unit to operate noisily.

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INSTALLATION DIAGRAM

Air Filter

Air IntakeGrille

Air DischargeLouver

Air DischargeGrille

Front Frame

Back HousingMain Switch

ON/OFF SwitchDrain Hose

Return Air

AirDischarge

Nozzle

IndicatorLight

Signal Receiver

Refrigerant Piping

Indoor Unit

Outdoor Unit

The outdoor unit must be installed such that there is no shortcircuit of the hot discharge air or obstruction to the smoothair flow. Please follow the installation clearance shownbelow. Select the coolest possible place where intake airtemperature is not greater than the outside air temperature(maximum 45°C).

Installation Clearance

Note : If there is any obstacle higher than 2m, or if there isany obstruction at the upper part of the unit, please allowmore space than the figure indicated in the above table.

Dimension A B C DMinimumDistance (mm) 300 1000 300 500

Obs

tacl

e

Obs

tacl

e

Ret

urn

Air

Dis

char

ge A

ir

Obs

tacl

e

Obs

tacl

e

Ret

urn

Air

Serv

ice

Acc

ess

INSTALLATION OF INDOOR UNIT

Plate MountingInstallation

The indoor unit must be installed in such a way so as toprevent short circuit of the cool discharged air with the hotreturn air. Please follow the installation clearance shown inthe figure. Do not place the indoor unit where there couldbe direct sunlight shining on it. Also, this location must besuitable for piping and drainage, and be away from doorsor windows.

Hole With Cone DrillIndoorSide

OutdoorSide

Screw position in thewall

Ø 65.0 mm Hole inthe wall

Mounting Installation PlateEnsure that the wall is strong enough to withstand the weightof the unit. Otherwise, it is necessary to reinforce the wallwith plates, beams or pillars.Use the level gauge for horizontal mounting, and fix it with4 suitable screws.In case the rear piping draws out, drill a hole 65mm indiameter with a cone drill, slightly lower on the outsidewall.

Routing Of PipingRemove the screw holding the front panel.

Piping Routing

Maintenance &Servicing Space

Air FlowDirection

Hig

her

than

eye

leve

l

50.0mm 50.0mm

50

.0m

m

INSTALLATION OF OUTDOOR UNIT

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Water Drainage

Wrong Wrong WrongCorrect

Drain

Enddippedinto water

WaterLeaking

WaterLeaking

WaterLeaking

Water Drainage PipingThe indoor drain pipe must be in a downward gradient forsmooth drainage. Avoid situations that are likely to causewater to leak.

Drain hoseFix with vinyl tape

➤ Unit piping

The refrigerant piping can be routed to the unit in anumber of ways (left or right from the back of the unit), byusing the cut-out holes on the casing of the unit (see figure).Bend the pipes carefully to the required position in order toaligned it with the holes. For the right hand and rear sideout, hold the bottom of the piping and then position it to therequired direction (see figure). The condensation drain hosecan be taped to the pipes.

Mount The Unit Onto The Installation PlateHook the indoor unit onto the upper portion of theinstallation plate (Engage the two hooks at the rear top ofthe indoor unit with the upper edge of the installation plate).Ensure that the hooks are properly seated on theinstallation plate by moving it to the left and right.

Right & Rear Side Routing

1. Hook the unit onto the installation plate.

2. A unit support plate on theinstallation plate can be used tohold the unit slanted (See figures)to ease the piping installation

work.

3. Fix the screw underneathafter completion ofinstallation.

Piping Length & ElevationIf the pipe is too long, both the capacity and reliability of the unit will drop. As the number of bends increases, resistanceto the flow of refrigerant system increases, thus lowering cooling capacity, and as a result the compressor may becomedefective. Always choose the shortest path and follow the recommendations as tabulated on next page :

Remark: The refrigerant that has been pre-charged in the outdoor unit is for piping length up to 5 m.

REFRIGERANT PIPING

➤

➤

L1 L2

Indoor Unit

Outdoor Unit

L1 L2

Indoor Unit

Outdoor Unit

VerticalHeight

DifferenceMax. H

VerticalHeight

DifferenceMax. H

VerticalHeight

DifferenceMax. H

L1 L2

Indoor Unit

L3

Outdoor Unit

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Ø Tube, D A (mm)

Inch mm Imperial Rigid1/4" 6.35 1.3 0.73/8" 9.52 1.6 1.01/2" 12.70 1.9 1.35/8" 15.88 2.2 1.7

Piping Connection To The Units• Align the center of the piping and tighten the flare nut

sufficiently with fingers.• Finally, tighten the flare nut with the torque wrench

until the wrench clicks.

• If any brazing work is required, ensure that the nitrogengas is passed through coil and joints while the brazingwork is being done. This will eliminate soot formationon the inside walls of the copper tubings.

• Cut the connection pipe with a pipe cutter.• Remove burrs from cut edges of the pipes with remover.

Hold the end of the pipe downwards to prevent metalchips from entering the pipe.

• Insert the flare nuts, mounted on the connection parts ofboth the indoor unit and outdoor unit onto the copperpipes.

• Flare the pipe with extra length above the flaring tool asshown in the table.

• The flared edge must be even and not cracked orscratched.

Piping Works• Do not use contaminated or damaged copper tubing. Do not remove plastic, rubber plugs and brass nuts from the valves,

fittings, tubings and coils until you are ready to connect suction or liquid line into valves or fittings.

Copper tubeSwaging Block

Remove Burr

Cutting copper tube

Indoor Piping Flare Nut

Flare TubeFlare Joint

SpanarTorque Wrench

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ModelMaximum Length, L

Max. Elevation, H

Max. Number of BendsLiquid Pipe SizeGas Pipe Size

MST101010A MST101015A MST101515A MST151515A MST101020A10m / 10m / 10m 10m / 10m / 10m 10m / 10m / 10m 10m / 10m / 10m 10m / 10m / 15m

5m / 5m / 5m 5m / 5m / 5m 5m / 5m / 5m 5m / 5m / 5m 5m / 5m / 8m10 / 10 / 10 10 / 10 / 10 10 / 10 / 10 10 / 10 / 10 10 / 10 / 10

1/4" / 1/4" / 1/4" 1/4" / 1/4" / 1/4" 1/4" / 1/4" / 1/4" 1/4" / 1/4" / 1/4" 1/4" / 1/4" / 1/4"3/8" / 3/8" / 3/8" 3/8" / 3/8" / 1/2" 3/8" / 1/2" / 1/2" 1/2" / 1/2" / 1/2" 3/8" / 3/8" / 5/8"

ModelMaximum Length, L

Max. Elevation, H

Max. Number of BendsLiquid Pipe SizeGas Pipe Size

MSD1010A/AR MSD1015A/AR MSD1515A/AR MSD1020A/AR MSD1520A/AR MSD2020A/AR10m / 10m 10m / 10m 10m / 10m 10m / 15m 10m / 15m 15m / 15m

5m / 5m 5m / 5m 5m / 5m 5m / 8m 5m / 8m 8m / 8m10 / 10 10 / 10 10 / 10 10 / 10 10 / 10 10 / 10

1/4" / 1/4" 1/4" / 1/4" 1/4" / 1/4" 1/4" / 1/4" 1/4" / 1/4" 1/4" / 1/4"3/8" / 3/8" 3/8" / 1/2" 1/2" / 1/2" 3/8" / 5/8" 1/2" / 5/8" 5/8" / 5/8"

Pipe Size (mm/in) Torque (Nm)

6.35 (1/4) 189.53 (3/8) 4212.7 (1/2) 55

15.88 (5/8) 65

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Outdoor UnitTerminal Block

MSD 1010A / 1015A / 1515A1020A / 1520A / 2020A

Interconnection Cable

Interconnection CableIndoor Unit 1Terminal Block

Indoor Unit 2Terminal Block

Main PowerSupply

There must be a double pole switch withminimum 3mm contact gap and fuse/circuitbreaker as recommended in the fixed installationcircuit.

!






There must be a double pole switch withminimum 3mm contact gap and fuse/circuitbreaker as recommended in the fixed installationcircuit.

!



MST 101010A / 101015A /101515A / 151515A

Main PowerSupply

!The power cord is supplied with the unit withwire length 1.5m. There must be a double poleswitch with minimum 3mm contact gap andfuse/circuit breaker as recommended in thefixed installation circuit.

Indoor UnitTerminal Block

Indoor UnitTerminal Block


Heat Pump UnitMSD 1010AR / 1015AR / 1515AR / 1020AR / 1520AR

• All wires must be firmly connected.• All wires must not touch any of the refrigerant piping, compressor or any moving parts of fan motor.• The connecting wires between the indoor unit and the outdoor unit must be clamped on the wire clamps

as shown in the figure.• The power supply cord must be equivalent to H05RN-F (245IEC57) which is the minimum requirement.

ELECTRICAL WIRING CONNECTION

Cooling UnitIMPORTANT : The figures shown are for information purpose only. They should be checked and selected to

comply with the local and/or national codes and regulations. They are also subjected to thetype of installation and type of conductors used.

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VACUUMING AND CHARGING

Purging The Piping And The Indoor Unit

Except for the outdoor unit which is pre-charged withrefrigerant R22, the indoor unit and the refrigerantconnection pipes must be air-purged because the aircontaining moisture that remains in the refrigerant cycle maycause malfunction of the compressor.• Remove the caps from the valve and the service port.• Connect the center of the charging gauge to the vacuum

pump.• Connect the charging gauge to the service port of the

3-way valve.• Start the vacuum pump. Evacuate for approximately 30

minutes. The evacuation time varies with differentvacuum pump capacity. Confirm that the charging gaugeneedle has moved towards -76mmHg (0~76mmHg).

CautionIf the gauge needle does not move to 0~76mmHg, besure to check for gas leaks (using the refrigerantdetector) at flare type connection of the indoor andoutdoor unit and repair the leak before proceeding tothe next step.

• Close the valve of the changing gauge and stop thevacuum pump.

• On the outdoor unit, open the suction valve (3 way) andliquid valve (2 way) (in anti-clockwise direction) with4mm key for hexagon sacked screw.

Service PortOutdoor unit 3 ways valve

Flare nutRefrigerant PipingAllen key

Charge Operation

This operation must be done by using a gas cylinder and aprecise weighing machine obligatorily. The additionalcharge is topped-up into the outdoor unit using the suc-tion valve via the service port.

• Remove the service port cap.• Connect the low pressure side of the charging gauge to

the suction service port center of the cylinder tank andclose the high pressure side of the gauge. Purge the airfrom the service hose.

• Start the air conditioner unit.• Open the gas cylinder and low pressure charging valve.• When the required refrigerant quantity is pumped into

the unit, close the low pressure side and the gas cylindervalve.

• Disconnect the service hose from service port. Put backthe service port cap.

Additional ChargeThe refrigerant is pre-charged in the outdoor unit. If thepiping length is less than 5m, then additional charge aftervacuuming is not necessary. If the piping length is morethan 5m, then use the additional charge valve as indicatedin the table below.

Additional Charge In Gram

ModelWMS 10 EWMS 10 FWMS 15 FWMS 20 C

WMS 10 ERWMS 10 FRWMS 15 FRWMS 20 CR

7 m 10 m 15 m30 75 –30 75 –30 75 –30 75 15040 100 –40 100 –40 100 –50 125 250

➤

LED Indicator Lights

INDICATOR LIGHT

IR Signal Receiver

When an infrared remote control operating signal hasbeen transmitted, the signal receiver on the indoor unitwill make a <beep> sound to confirm acceptance of thesignal transmission.

The table shows the LED indicator lights for the airconditioner unit under normal operation and fault conditions.The LED indicator lights are located at the bottom right sideof the air conditioner unit.

The heat pump units are equipped with an "auto" modesensor whereby it will provide reasonable room temperatureby switching automatically to either "cool" or "heat"mode, according to the temperature set by the user.

➤

IR Receiver

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LED Indicator Lights For Cooling Unit

LED Indicator Lights : Normal Operation And Fault Conditions For Cooling Unit

Timer

Sleep modePower ON

Dry mode

Operation / Fault Indication Action

Timer on. –

Sleep mode on. –

Dry mode. –

Frost prevention. Clean the filter and switch to high fan.

Room air sensor contact loose/short. Call your dealer.

Indoor coil sensor contact loose/short. Call your dealer.

Sensor contact problem, compressorCall your dealer.

overload protection trip or gas leak

ON or OFFON Blinking

Power Sleep Timer Dry

Continuously

once every 2 sec.

twice every 2 sec.

3 times every 2 sec.

LED Indicator Lights For Heat Pump Unit

Cooling mode Heating mode

Dry mode Sleep mode

Fan mode Filter check

LED Indicator Lights : Normal Operation And Fault Conditions For Heat Pump Unit

Cooling mode. –

Dry mode. –

Fan mode. –

Heat mode. –

Auto mode in heating operation. –

Auto mode in cooling operation. –

Defrost operation. –

Frost prevention in cool mode. Clean the filter & switch to high fan.

Frost prevention in dry mode. Clean the filter & switch to high fan.

Compressor overload protection. Call your dealer.


Outdoor coil sensor contact loose/short. Call your dealer.


If the system is in cool mode or heat mode (with the sleep function off),the sensor may have contact problem, compressor overload protectiontrip or gas leak.

Normal Operation/Fault Condition ActionCool Dry Fan Heat Sleep Filter check


WMC Series

INDICATOR LIGHTS

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LED Indicator Lights for Cooling Unit

Timer

Sleep mode

Power ON

Dry mode



Timer on. –

Sleep mode on. –

Dry mode. –




Sensor contact problem, compressor Call your dealer.overload protection trip or gas leak



Continuously

once every 2 sec.

twice every 2 sec.


WME Series

LED Indicator Lights For Heat Pump Unit

Cooling mode Dry mode

Sleep modeHeat / Fan mode(red / green)


Cooling mode. –

Dry mode. –

Fan mode. –

Heat mode. –




Frost prevention in cool mode. Clean the filter & switch to high fan.

Frost prevention in dry mode. Clean the filter & switch to high fan.





If the system is in cool mode or heat mode (with the sleep function off),the sensor may have contact problem, compressor overload protectiontrip or gas leak.

Normal Operation/Fault Condition ActionCool Dry Fan Heat Sleep Filter check


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WMF Series

LED Indicator Lights For Cooling Unit LED Indicator Lights For Heat Pump Unit

Timer

Sleep mode

Power ON

Dry mode

Cooling mode Dry mode

Sleep modeHeat / Fan mode(red / green)

Cooling mode. –

Dry mode. –

Fan mode. –

Heat mode. –








If the system is in cool mode or heat mode (with the sleep function off), the sensormay have a contact problem, compressor protection overload trip or gas leak.

Normal Operation/Fault Condition ActionCool Dry Fan Heat Sleep





Timer on. –

Sleep mode on. –

Dry mode. –




Sensor contact problem, compressor Call your dealer.overload protection trip or gas leak



Continuously

once every 2 sec.

twice every 2 sec.


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Temperature Ts °C Th °CMinimum indoor

16 11temperature

Maximum indoor32 23temperature

Minimum outdoor16 11temperature

Maximum outdoor43 26temperature

Dry Mode• When the air humidity is high, the unit can operate in

dry mode. Press <MODE> button and choose <DRY>.

• If the room temperature is 2°C higher than the settemperature, the air conditioner will operate undercooling mode until it reaches within the 2°C range ofdifference compared to the set temperature before itconverts to dry mode.

• If the room temperature is within the 2°C range ofdifference compared to the set temperature, it willdirectly operate under dry mode.

• The unit will operate at LOW speed under dry mode.

Heat Mode (for heat pump unit only)• When the unit is switched on from cold start or

defrosting cycle, the indoor fan will start to operate onlyafter the coil reaches the desired temperature.

• When the set temperature is achieved, the indoor fanwill operate until the coil cannot provide anymoreadditional heat.

Overheating Protection (for heat pump unit only)• In case the internal and/or the external temperature is to

high, or that the filter is dirty and clogged up, therefrigerant may be overheated. The compressor will cutout when the condensing temperature reaches 62°C.

Frost Prevention• When the air filter is dirty, the evaporating temperature

will decrease and eventually cause frosting.

• The LED light will blink to indicate that the filter isdirty. If the evaporating temperature reaches 0°C, theunit will trip and defrost.

Fan Speed And Rated Cooling Capacity• The rated cooling capacity is provided at the maximum

fan speed.

• The cooling capacity is lower when the unit is operatingat MEDIUM and LOW fan speed.

Horizontal Air Flow Control• For more effective air circulation, you can manually adjust the air discharge grille to the left or right.• During cool mode operation and dry mode operation, do not direct the air discharge louver downwards for too long. If

operating continues in this way, condensation may occur on the louver, thus resulting in drippings.

Jumper

SwitchON OFF

Compressor Cut Off (for heat pump only)

• During compressor cut off, the indoor fan motor can beswitched to ON (default) or Off by setting the jumper asshown in the diagram.

• The jumper is located at the front frame cover (togetherwith the ON/OFF switch).

STANDARD OPERATING CONDITIONS

Heat Pump UnitCooling Unit

Temperature Ts °C Th °CMinimum indoor

16 –temperatureMaximum indoor

30 –temperatureMinimum outdoor

-5 -6temperatureMaximum outdoor

24 18temperature

Ts: Dry bulb temperature. Th: Wet bulb temperature.

C

Horizontal

Coo

ling

Dry

25°C

AIR CONDITIONER UNIT OPERATION

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SERVICE AND MAINTENANCE

Maintenance Procedures

1. Remove any dust adhering to the filter by using a vacuum cleaner orwash in lukewarm water (below 40°C) with a neutral cleaning detergent.

2. Rinse the filter well and dry before placing it back onto the unit.

3. Do not use gasoline, volatile substances or chemicals to clean the filter.

1. Clean any dirt or dust on the grille or panel by wiping it with a softcloth soaked in lukewarm water (below 40°C) and a neutral detergentsolution.

2. Do not use gasoline, volatile substances or chemicals to clean theindoor unit.

Period

At least onceevery 2 weeks.

More frequently ifnecessary.

At least onceevery 2 weeks.

More frequently ifnecessary.

Service Parts

Indoor air filter

Indoor unit

Caution : Do not operate any heating apparatus too close to the air conditioner unit. This may cause the plastic panel tomelt or deform as a result of the excessive heat.

When The Unit Is Not To Be Used For An Extended Long Period Of Time

Operate the unit for 2 hourswith the following setting.

Operating mode : coolTemperature : 30°C

Remove the power plug.If you are using an independentelectric circuit for your unit,cut off the circuit.Remove the batteries in theremote control.

If any malfunction of the air conditioner unit is noted, immediately switch off the power supply to the unit.Check the following fault conditions and causes for some simple trouble shooting tips.

Causes / Action

- Protection against frequent starting. Wait for 3 to 4 minutes forthe compressor to start operating.

- Power failure, or the fuse needs to be replaced.

- The power plug is disconnected.

- It is possible that your delay timer has been set incorrectly.

- If the fault persist after all these verifications, pleasecontact the air conditioner unit installer.

- The air filter is dirty.

- The doors or windows are open.

- The air suction and discharge are clogged.

- The regulated temperature is not high enough.

- Odors may be caused by cigarettes, smoke particles, perfumeetc. which might have adhered onto the coil.

- This is caused by air humidity after an extended long period ofoperation.

- The set temperature is too low, increase the temperature settingand operate the unit at high fan speed.

- Switch off unit and call dealer.

- Refrigerant fluid flowing into the evaporator coil.

Fault

1. The compressor does not operate 3 minutes after the airconditioner unit is started.

2. The air conditioner unit does not operate.

3. The air flow is too low.

4. Discharge air flow has bad odor.

5. Condensation on the front air grille of the indoor unit.

6. Water flowing out from the air conditioner unit.

7. Hissing air flow sound from the air conditioner unit duringoperation.

If the fault persists, please call your local dealer / serviceman.

TROUBLE SHOOTING

Documents

MULTI SPLIT TYPE AIR CONDITIONER - skynet.beusers.skynet.be/loc10/pdf_loc_10/techn_info/mcquay_manual/005 MUL… · multi split type air conditioner installation manual oyl manufacturing