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Tumble - Dryer With Heat PumpDevelopment on basis of Nexus 4( EDR 2000 )
2
Function of heat pumpFunction of heat pump
3
R134a Charakteristik
36%-10123456789
101112131415
-60 -50 -40 -30 -20 -10 0 10 20 30 40 50 60
Evaporation Temperature [°C]
Rel
ativ
e P
ress
ure
[bar
]
R600a
R134a
R12
4
R134a Working range heat pump
36%0
5
10
15
20
25
30
35
40
-30 -20 -10 0 10 20 30 40 50 60 70 80 90 100
Evaporation Temperature [°C]
Relat
ive P
ress
ure [
bar]
Pressure switch
High pressure line
Low pressure line
R134a filling weight: 290grams
5
Measured pressures in condenser and evaporator
36%0
2
4
6
8
10
12
14
16
18
10
:46
10
:49
10
:52
10
:55
10
:58
11
:01
11
:05
11
:08
11
:11
11
:14
11
:17
11
:20
11
:24
11
:27
11
:30
11
:33
11
:36
11
:39
11
:43
11
:46
11
:49
11
:52
11
:55
11
:58
12
:02
12
:05
12
:08
12
:11
12
:14
12
:17
12
:21
12
:24
12
:27
12
:30
12
:33
12
:36
Zeit
bar Verflüssiger
Verdampfer
Evaporator
Condenser
6
Measured temperatures in condenser and evaporator
36%0
10
20
30
40
50
60
70
10
:46
10
:49
10
:53
10
:56
11
:00
11
:03
11
:07
11
:10
11
:14
11
:17
11
:21
11
:24
11
:28
11
:31
11
:35
11
:38
11
:42
11
:45
11
:49
11
:52
11
:56
11
:59
12
:03
12
:06
12
:10
12
:13
12
:17
12
:20
12
:24
12
:27
12
:31
12
:34
Zeit
Tem
pera
tur
°C
Temperatur am VerdampferTemperatur am Verflüssiger
Condenser
Evaporator
7
Technical data
Type: Condensed dryerSensor system: Clothes conductivity measurementApplication: AEG BrandFactories: DGNPower supply: 230/240V - 50HzDrying heaters relays used to drive:– Heat pump compressor (with external relay?)– Refrigerant: R134a– Process Air fan
Door device output used to drive the compressor cooling fan --- No electric door opening available ---Door reversibility: available by end userDrum light: Available (driven by separate triac)
8
Technical data
Tank Position: upper tank only (with tank pump)NTC: up to 2 inputs availableTransportation of EDR 2000AEG specification:– Same user interface layout (push buttons, leds, digits)– Same cycles– Same options
Same configuration philosophy / tools30% less energy consumptionDeclaration for 6kg wash load
36%
9
General Objectives
Standardisation of electronic solutions:Same Main board of EDR 2000 AEG
(creation of a variant with specific software)Use of new software concepts:
– User interface configuration– Cycles configuration
Short software debugging due to:– Use of the same software structure of EDR 2000AEG– Only changes are on:
–Compressor management–Process fan management–NTC management
10
Basement Circuits
Condenser
Expansion valve
Electric Coolingfan compressor
Hot and Dry Air
Electric Fan
Cold and Dry Air
Plastic Basement
- Process air
- Heat pump circuit
Asynchronous Motor NEXXXT
H20
Evaporator
Compressor
Hot and Humid Air
11
AEG NEXXXT Design
• Consumption: A-class• Program duration: 140 min (6kg), 110 min (5kg) • Noise: <65 dBA (Techn. Declaration)• Condensation efficiency 75%; improvements
needed to fit to “gut/sehr gut” STIWA (new project)
• 16 and 20 position knob• Drum light• Reversible door
12
Cycle options
Push button options: Time Saving The aim is to reduce the drying programs duration.It affects a five minutes shorter cool down.
Gentle movement Option with red. mechanical agitationVery gentle movement Option with red. mechanical agitation but additional with
reduced load ( 3 kg ).
Half Load
This option should be selected when in a high load declared cycle (5-6kg), only half load is inserted in the drum. This option affects the cycle behaviour (motor movements ) in order to optimize it for small loads.
13
Cycle options
Long Anticreasing
This option is used to prevent laundry creases if user isn't able to remove laundry from dryer at the end of the cycle. A "normal" anticrease (duration 30min) is always planned at the end of nearly every cycle. This option increases the anticrease duratio
Final humidity adj.It is a fine tuning of final humidity. If the user is not happy about "default" final humidity target, with this option he can adjust it (range is about -2% 4% respect default value)
Push buttons combination feature:
Water Conductivity adj.
This option could be modified by pressing the specific push button combination, depending by water conducibilty level of country target. There are 3 levels of water conducibility: 250, 450 and 750 microSiemens. Default level is 450uS. This option affects
14
Cycle options
Features:Fast Program End
(FPE)
This cycle feature is enclosed in all humidity controlled drying program (Cottons, Easy Cares and some Special programs). It consist in a fast detection of wet laundry inside the dryer. If it finds no laundry or dryed laundry it signals the cycle end (in
Indication of humidity level
For Cottons and Easy Cares programs, this is a LEDs indication, during a drying cycle execution, of the current status of the laundry inside the drum.
15
Electonic components
The attached links will show you the specificationdrawings of the electrical components:
CompressorHeat pump basement group
Motorcooling fanFan motorMotor capacitor Relais for heat pumpCarbon brush
16
Wiring diagram
17
Service mode
To enter the diagnostic mode, turn program selector to the first position clockwise. Then press buttons START/PAUSE andthe left button beside simultaneously for about 5 seconds .To exit the diagnostic mode, switch OFF the appliance.
Then switch it ON, and switch it OFF AGAINThis is to avoid the machine go into factory test mode.
18
Service mode
checked functions:• User interface functionalityactuated components:• all LEDs light in sequence• if a pushbutton is depressed, thecorresponding LED lights, andbuzzer sounds if applicable
conditions:• none
Selector in position 1
19
Service mode
checked functions:• tank pump • tank switch
Attention: the lower tank has to be filled with water, that the level switchis closed !!!
actuated components:• tank switch• tank pump• compressor fanconditions:• door closed • Time out 10minutes
Selector in position 2
20
Service mode
checked functions: • to test motor in counter clockwise direction
actuated components:• motor• motor triac• relay of direction• compressor fan
conditions:• door closed• Time out 10 minutes
Selector inposition 3
21
Service mode
checked functions: • to test motor inclockwise direction(low speed for visual inspection of drumshell assembly)
actuated components:• motor• motor triac• compressor fan
conditions:• door closed• time out 10 minutes
Selector inposition 4
22
Service mode
checked functions: • to test the main process fanactuated components:• main fan• motor triac (full speed)• compressor fan
conditions:• door closed• time out 10 minutes
Selector inposition 5
23
Service mode
checked functions: • to test the compressoractuated components:• main fan• compressor• compressor fan• motor triac (full speed)
conditions:• door closed• time out 10 minutes
Selector inposition 6
24
Service mode
Selector inposition 7
checked functions: • to verify cunductimetric sensor inshort circuit condition
actuated components:• conductimetric sensor readingThe step lasts 4 seconds (1sec. To create the short circuit condition by hand). During this time all phase leds are flashing to give information of acquisition phase. At the end of step phase leds are switched on to give ok, otherwise they are flashing forever and alarm E32 is displayed.conditions:• door closed
25
Service mode
Selector inposition 8
checked functions: • to verify conductimetric sensor inopen circuit condition
actuated components:• conductimetric sensor readingThe step lasts 4 seconds (software configured). During this time all phase leds are flashing to give information of acquisition phase. At the end of step phase leds are switched on to give ok, otherwise they are flashing forever.conditions:• door closed
26
Service mode
checked functions:• tank switch
(same test as in diagnostic mode 2,used for factory purposes)
actuated components:• tank switch
conditions:• door closed • Time out 30s
Selector inposition 9
27
Service mode
checked functions: • reading and deleting of the lastalarm code
actuated components:• alarm indication
Selector in position 11
28
Alarm management
Alarm management is the same like for AEG EDR 2000 (Nexus 4)
with some alarm deviations:- Heating element- Compressor- Electronic door release- Cooling fan- ………
Quick alarm reading with standard key combination ispossible!!!! (Start-/Pause- key and left option key)
29
Alarm management
General:If a failure occurs during normal working condition of the dryer, then analarm will be shown to the customer and the buzzer will be activated.Alarms management is always active.Some alarms require a cooling cycle activation in order to bring the machine in a safe condition, trying to switch off the compressor and starting motor movement to ventilate the internal of the machine. When the alarm cooling program has started, it continues until the user switches off the dryer.Alarm indication:The alarm code has two or three digits, depending on the dryer versione.g. E 5 1
Error Family code alarm code
30
Alarm management
All EDR 2000 dryers will show the alarm code on thetime to end display.The alarm will be shown as E X Y e.g. E51
E = ErrorX = alarm family Y = alarm number
31
Alarm management
Alarm: E21
Tank drain pump triac failureAlarm description:
Incongruence between drain pump triac sensingand triac status
Fault condition:
Wiring or main board defectivePossible fault:
Cycle stopped ResetAction / status:
32
Alarm management
Alarm: E22
Tank drain pump triac sensing failureAlarm description:
Input voltage value on microprocessor always to 0V or to 5V
Fault condition:
Main board defectivePossible fault:
Reset36%Cycle stoppedAction / status:
33
Alarm management
Alarm: E31
Conductimetric sensing oscillation frequency too high
Alarm description:
The conductimetric electronic circuit has an oscillation frequency out of range (f > TBD Hz)
Fault condition:
Main board defectivePossible fault:
Reset36%Cycle stoppedAction / status:
34
Alarm management
Alarm: E32
Conductimetric sensing oscillation frequency too low
Alarm description:
The conductimetric electronic circuit has an oscillation frequency out of range (f < TBD Hz)
Fault condition:
Main board or wiring defectivePossible fault:
Reset36%Cycle stoppedAction / status:
35
Alarm management
Alarm: E51
Motor triac failure Alarm description:
Incongruence between motor triac sensingand triac status
Fault condition:
Wiring or main board defectiveMotor defectiveMotor overheating
Possible fault:
Reset36%Cycle stoppedAction / status:
36
Alarm management
Alarm: E52
Motor thermal cut off Alarm description:
Incongruence between motor triac sensingand triac status
Fault condition:
Wiring or main board defectiveMotor defectiveMotor overheating
Possible fault:
36%Alarm stored in memoryDisable movementAfter n trials generates E51
Action / status:
37
Alarm management
Alarm: E53
Motor triac sensing failure Alarm description:
Incongruence between motor triac sensingand triac status
Fault condition:
Main board defectivePossible fault:
Reset36%Cycle stoppedAction / status:
38
Alarm management
Alarm: E54
Motor jammed Alarm description:
Motor cannot move Fault condition:
Laundry load too heavy Low Power SupplyMotor defective
Possible fault:
Start36%Cycle pausedAction / status:
39
Alarm management
Alarm: E61
Heating timeout Alarm description:
NTC value hasn’t changed after some minutes since every heating cycle step start
Fault condition:
Drying compressor defectiveWiring or main board defectiveNTC out of position
Possible fault:
Start36%Cycle pausedAction / status:
40
Alarm management
Alarm: E62
Compressor relay failure Alarm description:
Incongruence between compressor sensing andrelay driving after n trials
Fault condition:
Wiring or main board defectiveRelay defective
Possible fault:
Reset36%Forced alarm cooling cycleAction / status:
41
Alarm management
Alarm: E63
Compressor automatic thermostat Alarm description:
Incongruence between compressor sensingand relay driving
Fault condition:
Thermostat defectiveCompressor defectiveWiring or main board defective
Possible fault:
36%Alarm stored in memoryDisable compressor After n trials generates E63
Action / status:
42
Alarm management
Alarm: E64
Compressor sensing failure Alarm description:
Incongruence between compressor sensingand relay status
Fault condition:
Main board defectivePossible fault:
Reset36%Cycle stoppedAction / status:
43
Alarm management
Alarm: E65
Main Fan relay failureAlarm description:
Incongruence between main fan sensing and relay driving after n trials
Fault condition:
Wiring or main board defectiveRelay defective
Possible fault:
Reset36%Forced alarm cooling cycleAction / status:
44
Alarm management
Alarm: E66
Main fan automatic thermostat Alarm description:
Incongruence between main fan sensingand relay driving
Fault condition:
Fan motor defectiveWiring or main board defective
Possible fault:
36%Alarm stored in memoryDisable compressorAfter n trials generates E66
Action / status:
45
Alarm management
Alarm: E67
Main fan sensing failure Alarm description:
Incongruence between main fan sensingand relay status
Fault condition:
Main board defectivePossible fault:
Reset36%Cycle stoppedAction / status:
46
Alarm management
Alarm: E71
Drying NTC1 failure Alarm description:
Voltage value out of limit (open circuit or short circuit)
Fault condition:
NTC defectiveWiring or main board defective
Possible fault:
Reset36%Forced alarm cooling cycleAction / status:
47
Alarm management
Alarm: E72
Drying NTC2 failure Alarm description:
Voltage value out of limit (open circuit or short circuit)
Fault condition:
NTC defectiveWiring or main board defective
Possible fault:
36%No actionAction / status:
48
Alarm management
Alarm: E82
Wrong selector reset position detection Alarm description:
Reset position code read on selector out of power fail management
Fault condition:
Main board defectivePossible fault:
Reset36%Cycle stoppedAction / status:
49
Alarm management
Alarm: E93
Machine configuration errorAlarm description:
Incongruent values on configuration data at power-on (checksum error)
Fault condition:
Wrong configuration data on EEPROMMain board defective
Possible fault:
Reset36%Cycle stoppedAction / status:
50
Alarm management
Alarm: E94
Cycle Configuration error failureAlarm description:
Incongruence values on configuration data at power-on (checksum error)
Fault condition:
Wrong configuration data on EEPROMMain board defective
Possible fault:
Reset36%Cycle stoppedAction / status:
51
Alarm management
Alarm: E95
Communication error between microprocessor and external EEPROM
Alarm description:
Error detected during external EEPROM data read/write
Fault condition:
main board defectivePossible fault:
Reset36%Cycle stoppedAction / status:
52
Alarm management
Alarm: E97
SCF – CTF mismatch errorAlarm description:
CTF file doesn’t contain all programs specified into SCF file
Fault condition:
Wrong configurationPossible fault:
Reset36%Cycle StoppedAction / status:
53
Alarm management
Alarm: EB1
Power supply frequency out of limits Alarm description:
Power supply period lower/higher than configured values
Fault condition:
Wrong or disturbed Power Supply line Main board defective
Possible fault:
36%Cycle stopped by power fail managementAction / status:
54
Alarm management
Alarm: EB2
Power supply voltage too high Alarm description:
MAIN_V sensing input voltage value on microprocessor to 5V
Fault condition:
Wrong or disturbed Power Supply line Main board defective
Possible fault:
36%Cycle stoppedAction / status:
55
Alarm management
Alarm: EB3
Power supply voltage too lowAlarm description:
MAIN_V sensing input voltage value lower than configured value
Fault condition:
Wrong or disturbed Power Supply line. Main board defective
Possible fault:
36%Cycle stopped by power fail managementAction / status:
56
Markets & Volumes
36% 300003000UK5000Switzerland2000France3000Scandinavia4000NL3000DK
10000DQuantityCountry