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CONDENSING DRYER
SERVICE MANUAL
CAUTION
READ THIS MANUAL CAREFULLY TO DIAGNOSE TROUBLE
CORRECTLY BEFORE OFFERING SERVICE.
MODEL : RC9011** / RC8011** Series
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JUL. 2008 PRINTED IN KOREA P/No.: 3828EL9001K
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IMPORTANT SAFETY NOTICE
The information in this service guide is intended for use by individuals possessing adequate backgrounds
of electrical, electronic, and mechanical experience. Any attempt to repair a major appliance may result in
personal injury and property damage. The manufacturer or seller cannot be responsible for the
interpretation of this information, nor can it assume any liability in connection with its use.
! WARNING !
To avoid personal injury, disconnect power before servicing this product. If electrical power is required
for diagnosis or test purposes, disconnect the power immediately after performing the necessary checks.
RECONNECT ALL GROUNDING DEVICES
If grounding wires, screws, straps, clips, nuts, or washers used to complete a path to ground are
removed for service, they must be returned to their original position and properly fastened.
IMPORTANT
Electrostatic Discharge (ESD)
Sensitive Electronics
ESD problems are present everywhere. ESD may damage or weaken the electronic
control assembly. The new control assembly may appear to work well after repair is
finished, but failure may occur at a later date due to ESD stress.
Use an anti-static wrist strap. Connect wrist strap to green ground connection point or unpainted
metal in the appliance.
- OR -
Touch your finger repeatedly to a green ground connection point or unpainted metal
in the appliance.
Before removing the part from its package, touch the anti-static bag to a green ground connection
point or unpainted metal in the appliance.
Avoid touching electronic parts or terminal contacts; handle electronic control assembly by edges only.
When repackaging failed electronic control assembly in anti-static bag, observe above instructions.
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CONTENTS
1.SPECIFICATIONS ............................................................................................................... 4
2.FEATURES AND LOOK ...................................................................................................... 5
3.PART IDENTIFICATION ....................................................................................................... 6
4.PROGRAM CYCLE ............................................................................................................. 7
5.INSTALLATION INSTRUCTIONS ....................................................................................... 10
6.MAINTENANCE INSTRUCTIONS ...................................................................................... 12
7.COMPONENT TESTING TIPS ............................................................................................ 14
8.CONTROL LAY-OUT ........................................................................................................ 16
9.WIRING DIAGRAM ......................................................................................................... 17
10. TROUBLESHOOTING .................................................................................................... 18
11. DIAGOSTIC TEST ........................................................................................................... 21
12. DIASSEMBLE INSTRUCTIONS ........................................................................................ 28
13. EXPLODED VIEW .......................................................................................................... 33
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1 SPECIFICATIONS
ITEMS RC8011** RC9011** REMARK
MATERIAL & FINISHES
DRYING TYPE Condenstation Condenstation
WEIGHT 45 kg (Gross : 50 kg) 45 kg (Gross : 50 kg)
DIMENSION 595(W) x 850(H) x 600(D) 595(W) x 850(H) x 600(D)
STANDARD DRYING CAPACITY 8.0 kg 9.0 kg
CONTROL TYPE Electronic Control Electronic Control
POWER SUPPLY AC 220~230V, 50Hz (16A) AC 220~230V, 50Hz (16A) LGEUK:13A, LGEAP:10A
MOTOR 210W 210W
HEATER 2500W 2500W LGEUK:2350W, LGEAP:1900W
LED LAMP DC12V(30mA) DC12V(30mA)
DOOR SWITCH 250V(5A) 250V(5A)
THERMOSTAT 240V(25A) 240V(25A)
CONTROL TYPE Electronic Electronic
DRUM CAPACITY 125 Liter 125 Liter
SAFETY DEVICES Thermal Fuse (Motor) Thermal Fuse (Motor)
Over current protect (Motor) Over current protect (Motor)
Thermostat Thermostat
SENSING TYPE Micom electronic Control Micom electronic Control
1. Temperature : 2 thermistors 1. Temperature : 2 thermistors
2. Humidity : Electrode Sensor 2. Humidity : Electrode Sensor
FILTER Removable Removable
DRUM SPEED 52~53 rpm 52~53 rpm
DRUM Stainless steel Stainless steel
DRYER RACK Available Available
CHILD LOCK Available Available
TEMPERTURE CONTROL Available Available Gentle button
BUZZER Available Available Default : high
ANTI-CREASE Available Available Dafault : OFF
FAVOURITE Available Available Dafault : OFF
MORE TIME Available Available Maximum=100min.
LESS TIME Available Available Minimum=15min.
TIME DELAY Available Available 3~19 hours
DRUM INTERIOR LIGHT Available Available
LED DISPLAY TIME DISPLAY TIME DISPLAY
RUNNING STATUS INDICATOR RUNNING STATUS INDICATOR
EMPTY WATER EMPTY WATER
CLEAN FILTER CLEAN FILTER
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2 FEATURES AND LOOK
Ultra big Capacity Drum
LG Dryer has 9.0kg / 8.0kg capacity which is the ultra big capacity.
Energy
Lower Energy Consumption
Energy is saved by cutting-edge engineering design of drying system
and by optimized heating control. It's a real money saving.
save
Reduced drying time
Drying time is shortened by efficient air flow mechanism and
optimized heater.
Innovative noise performance
Noise gets reduced by Noise-absorption & screening technology.
Easy of Use
Wide LED display using electric control.
Control Panel
RC9011A/B/C, RC8011A/B/C
LED Display
· Time Display
· Indicator Lamps & Left Time
Drying Level
· Iron
· Light
· Cupboard
· Very
· Extra
Program Selector Additional Function
Buttons
· More Time
· Less Time
· Option
· Buzzer
· Time Delay/Favourite
Anti-Crease/Drum Light
5
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3 PART IDENTIFICATION
RC9011A1/B1/C1, RC8011A1/B1/C1
Water Container Control Panel
Glass Door
Condenser Cover
Air Ventilation Grill
Accessory parts
1. Drain Hose Assembly 2. Dryer Rack Assembly
P/No. : 5001EL2001A P/No. : 3751EL1002C
3. Stacking kit Assembly ( Purchased Seperately)
1 2
Holder : 2EA, Screw : 4EA Holder : 2EA, Screw : 4EA
Purchased Separately Purchased Separately
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4 PROGRAM CYCLE
Time Delay More Time/Less Time
You can use the Time Delay function to delay the Press More Time or Less Time until the desired
finishing time of drying cycle. drying time is set.
Maximum Time Delay is 19 hours.
Minimum Time Delay is 3 hours. Note
1. Turn the dryer on
2. Select cycle These buttons are available only with Timed
3. Set time delay hour Drying, before you push Start/Pause button.
4. Press Start/Pause button
Favourite Child Lock ( )
For the safety of your children, press More Time
If there is some cycle you would like to make based
on your own drying habit, use "Favourite". and Less Time buttons at the same time for
Once favourite cycle is stored, you can repeatedly about 3 seconds. You can see " " sign on
use next time before changing the stored setting. LED window.
For instance, you turn power on and select Extra Dry
in Cotton Cycle and Low temp and Anti-Crease in Note
series and then lastly press "Favourite" until the
dryer beeps. It's about 3 seconds. That's all you have For " " off, press More Time and Less Time
to do. buttons at the same time for about 3 seconds.
The next time, when turning the dryer on and
pressing "Favourite" you can see the above options Option
you select displays on the panel. Gentle
- These are functioning to shorten or lengthen the
Anti-Crease cycle time by increasing or decreasing
Anti-Crease is functioning to prevent creases and temperature.
rumples that are formed when the laundry is not Damp Dry Beep
unloaded promptly at the end of drying cycle. In
this function, the dryer repeatedly runs and - This is a function to inform time.
pauses to the cycle end. When is the most suitable for ironing with beeper
If the door is open during Anti-Crease process, sound.
this function is cancelled. Crease Care
- This is a function to reduce wrinkles.
Drum Light
During operating cycle, you can see the drum Buzzer
inside by choosing drum light function.
It helps easy viewing the drying cycle. This is a function to able to adjust volume of
beeper sound.
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4 PROGRAM CYCLE
Cycle Selection Table
Standard
Electronic Auto Dry Cycles
program
Cotton (Whites and coloreds)
(Note) Select the gentle by pressing the option button for heat-sensitive items
Towels, dressing gowns
For thick and quilted fabrics Extra Dry
and bed linen
Terry towels, tea towels, towels, Very Dry
For thick and quilted fabrics which do not need to be ironed
bed linen
Bath towels, tea towels,
For fabrics which do not need to be ironed Cupboard dry
underwear, cotton socks
Sheets, pillowcase, towels For fabrics which do need to be ironed lightly, not completely light Dry
Bed linen, table linen, towels, T-shirts For fabrics which do need to be ironed Iron Dry
Polo shirts and work clothes
Mixed-Fabric Cycles
(Note) Select the gentle by pressing the option button for heat-sensitive items
Bed linen, table linen, tracksuits,
For thick and quilted fabrics which do not need to be ironed Very Dry
anorak, blankets
Shirts, blouses For fabrics which do not need to be ironed Cupboard dry
Trousers, dressers, skirts, blouses For fabrics which do need to be ironed Iron Dry
Quick Dry Cycles
A kind of linen and towel except
For the small loads of qualified fabrics with short drying times Quick Dry
for the special fabrics
Timed Drying Cycles for selected length of time
Bath towels, bath robes, dishclothes, Small clothes & pre-dried laundry
Quilted fabrics made of acrylic Normal fabrics using hot temperature for 20minutes
Warm
Small clothes & pre-dried laundry
Normal fabrics using hot temperature 40minutes
All fabrics needing freshing, tumbles without heat Cool Air
Special Fabrics
Wool For wool fabrics Wool
Silk, Women's thin clothes, lingerie For fabrics which are heat-sensitive like synthetic fabrics Delicate
Soccer uniform, training wear For 100% polyester material Sports Wear
Bed clothes For bulky items Bulkey Item
CAUTION
If the load is less than 1kg, please use "Timed Drying Course"
Your wool should be used in Wool program and heat-sensitive fabrics including silk, underwears,
lingerie should be used in delicates courses.
Otherwise, these clothes can cause undesirable drying results.
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4 PROGRAM CYCLE
Course More time Damp Dry Hand Crease Time Anti
Gentle beep Buzzer Delay Favourite crease Left Time
Course Detail Less time Iron care
Extra X O O X X O O O O 125
Very X O O X X O O O O 120
Cotton Cupboard X O O X X O O O O 115
Light X O X X X O O O O 103
Iron X O X O X O O O O 97
Very X O O X O O O O O 53
Mixed
Cupboard X O O X O O O O O 48
Fabrics
Iron X O X O O O O O O 41
Quick X X X X X O O O O 50
Timed Cool Air O X X X X O O O O 40
Drying Warm O O X X X O O O O 40
Delicate X X X X X O O O O 45
Special Sports wear X X X X X O O O O 30
Fabrics Wool X X X X X O O O O 21
Bulky Item X X X X X O O O O 60
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5 INSTALLATION INSTRUCTIONS
Level the Dryer
1. Leveling the dryer is to prevent undesirable
noise and vibration.
When placing your dryer in an solid and level
area where water is not dripping and freezing,
flammable materials are not stored.
2. If the dryer is not properly level, adjust the front
leveling legs up and down as necessary.
Turn them clockwise to raise and
counterclockwise to lower until the dryer is not
wobbling both front-to-back and side-to-side.
Adjustable Feet
Dryer is raised Dryer is lowered
Adjustable Feet Adjustable Feet
Diagonal Check
When pushing down the edges of the machine, the
machine should not move up and down at all.
(Please, check both of two directions)
If machine rocks when pushing the machine top
plate diagonally, adjust the feet again.
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5 INSTALLATION INSTRUCTIONS
Stacking Kit 3. After detaching protection sheet of double-
side tape, align stacking kit holes rear cover
In order to stack this dryer on LG Washing holes and then attach tape to the washer by
machine, you must purchase the LG pressing hard.
stacking kit that is fitted by LG washing
machine top plate size.
1. Place the LG dryer on the LG Washing
machine.
WARNING
When Placing Dryer
the dryer, pull
power cord out of
a power source.
Washer
Don't drop the
dryer. 4. Assemble a stacking kit as following.
· Screw 2 screws which is unscrewed earlier to
assemble dryer rear back and stacking kit.( 1 )
· Use accessory screws to assemble washer rear
cover and stacking kit. ( 2 , 3 )
· The procedure for the opposite side will be the
2. Unscrew Rear cover in the Base by unscrewing same.
2 screws.
Condensate Drain
The dryer can drain water without delivering to
water container. Water is directly pumped out
of the dryer.
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6 MAINTENANCE INSTRUCTIONS
Front Ventilation Grille 3. Connect
Vacuum the front ventilation grill 3~4 time a year to drain hose
make sure there must be no build-up of lints or dirts to the kit.
which cause improper intake air flow.
Moisture Sensor?
This device functions to sense the moisture
remaining contents of the laundry during
operation which means it must be cleaned all
the time. The main reason of cleaning this part
Condensed Water Drain-out is to remove the build-up of lime scale on the
surface of sensor. Wipe the sensors inside
Normally, condensed water is pumped up to water drum (Shown in the picture).
container where water is collected until emptied.
Not only using water container, but water can be
drained out directly to drain hose especially when
dryer is stacked on top of washing machine.
With connecting kit for drain hose, you can simply
change water path and water reroute to the drainage
facility.
Please follow the below steps.
1. Take
connecting
kit out.
2. Separate
water
container
hose from
the kit.
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6 MAINTENANCE INSTRUCTIONS
CAUTION
· Power cord must be unplugged before this
work to avoid danger of electric shock.
· The bulb itself could be very hot when the
dryer just finishes its operation. So before
changing the bulb, be sure that the inside of
the drum is cool down.
5. Rotate the lamp cover in anti-clockwise
1. Disassemble Top Cover, Drawer and Control direction (from your side) till it stops to rotate
Panel Assembly as explained in Page no. 30 and pull it with certain amount of force, and
take out the LED Lamp Cover Assembly.
2. Disconnect the Red Connector.
Legs for holding
Assembly
6. Now insert new LED Lamp Cover assembly
from inside and pull the connector and its
wire toward outside through the hole , at
same time rotate the lamp cover in clockwise
3. Now take the wire of Lamp Cover Assembly direction, till it stops to rotate.
out of the hooks as shown in picture.
7. Screw the screw taken out during
disassembly.
8. Adjust the Wire through the hooks and
Connect the red connector.
4. Open the Door, Put your one hand inside
the Drum and unscrew the screw on Lamp
Cover with the help of a screw driver. 9. Assemble the control panel, Drawer and Top
plate.
(DO NOT forget to connect the connectors of
Control Panel Assembly in PCB Assembly).
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7 COMPONENT TESTING TIPS
Component Test procedure Check result Remark
1. Thermostat Measure resistance of Measure resistance by pressing Safety
(Manual type) Terminal to terminal button When resistance becomes Thermostat
1) Open at 170°C (-10/+5°C)
Resistance value < 5
2. Thermistor Measure resistance of Resistance value : Cover, Front
(Low temperature ) terminal to terminal 10K 5% (at 25°C)
3. Heater, Measure resistance of Resistance value :
Thermistor Terminal to terminal Yellow/White : 28.96 1
Blue/White : 56.29 2
Heater
Measure resistance of Resistance value :
therminal to terminal 200K 5% (at 25°C)
Thermistor
4. Motor Measure resistance of Resistance value(20°...):
Terminal to terminal Blue / White : 15.3( 7%)
Red / White : 18.5( 7%)
5. Capacitor Measure capacitance of Capacitance value : 10 0.2µF
Terminal to terminal
6. Pump Measure resistance of Resistance value(20°C):
Terminal to terminal 210( 5%)
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7 COMPONENT TESTING TIPS
Component Test procedure Check result Remark
7. Door S/W Measure resistance of the The state that
Following terminal knob is Pressed is
1) Door switch knob : open opposite to open
1 Terminal : "COM"- "NC" 1 Resistance value < 1 condition
(1-3)
2 Terminal : "COM"- "NO" 2 Resistance value ÷
(1-2)
2)Door switch push : Push
1 Terminal : "COM"- "NC" 1 Resistance value ÷
(1-3)
2 Terminal : "COM"- "NO" 2 Resistance value < 1
(1-2)
8. Lamp holder LED LAMP DC 12V
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8 CONTROL LAY-OUT
PWB ASSEMBLY DISPLAY LAY-OUT
OPTION PART
MODEL P/NO
DP1 DP2 DP3 DP4 DP5 DP6
RC8011*
X X X X X X EBR50559201
RC9011*
RC8011**
X X O X X X EBR50559202
RC9011**
O : Option diode(DP) applied
X : Option diode(DP) not-applied
PWB ASSEMBLY LAY-OUT
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9 WIRING DIAGRAM
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10 TROUBLESHOOTING
1. This TEST should be used for Factory test/Service test. Do not use this DIAGNOSTICTEST other than specified.
2. Activating the Heater manually with Door open may trp the Thermostat attached to the Heater, therefore do not
activate it manually, (Do not press the door switch to operate the heater while the door is open)
Activating the diagnostic test mode
1. Unit must be in Standby (unit plugged in, display off)
2. Press "POWER" while pressing "More time" and "Less time" simultaneously.
Pressing the CHECKING DISPLAY CHECKING
"START/PAUSE"button ACTION POINTS
Check all leds for operation. All the LED's on with
None Electric control buzzer.
Motor run counterclockwise. Course LED's on.
70~240 Displays Moisture Sensor Operation: If
Once Motor Measured moisture sensor is contacted with damp
Moisture Value cloth. The display number is below 180,
in normal condition.
Motor run clockwise. Only option Button
70~240 Displays Moisture Sensor Operation: If LED's on.
Twice Motor Measured moisture sensor is contacted with damp
Moisture Value cloth. The display number is below 180,
in normal condition.
Motor run clockwise. LED's of Gentle and
Current Quick option glitter.
3 times Motor + Heater 1 Heater run(Display the temperature of low
temperature
temperature themistor located under door.)
Motor run clockwise. LED's of Time Delay,
Motor+Heater 1 Current Heater run(Display the temperature of high Favorite, Anti-crease
4 times
+Heater 2 temperature temperature thermistor located in heater and Buzzer options
assembly.) glitter.
All the LED's of Sub-
Motor off + Heater off Water level in Jog dial (Drying
5 times Pump run
Pump on sump Level) glitter.
Motor run clockwise. All the LED's on.
70~240 Displays Moisture Sensor Operation: If
6 times Motor Measured moisture sensor is contacted with damp
Moisture Value cloth. The display number is below 180,
in normal condition.
All the LED's on / Off.
7 times Motor off 000
8 times Control Off Auto Off
Data Display
-Tested under normal operation mode.
- Press the button as follows.
No. of Button pressing Display
More time + Time Delay Moisture data
More time + Favourite Temperature sensed by low temperature thermistor (located under door)
More time + Anti-Crease Temperature sensed by High temperature thermistor (located in heater assembly)
More time + Drum Light Remaining water data by water level sensor
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10 TROUBLESHOOTING
Error Mode
· : LED displays " " in case of the door open. The door must be closed and
start Button must be pressed for re-operation. (See the 22 page)
· : splay thermistor symptom.
Display Symptom
tE 1 Low temperature thermistor open
tE 2 Low temperature thermistor short
tE 3 High temperature thermistor open
Check point
· : Check the main PCB red 4 pin housing not inserting Blue harness in red 4 pin
( number 2 , 4 )
Low temperature thermistor connector not inserting
Main PCB Micom not soldering
· : Check the main PCB red 4 pin housing Short of Blue harness in Red 4 pin.
Low temperature thermistor short : check the resitance( see 15 page )
Main PCB Micom short replace Main PCB
· : Check the white 8 pin housing (No. 3,4) in main PCB.
And Check the high temperature thermistor connector in rear cover part. ( blue wire )
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10 TROUBLESHOOTING
Power-On
Power button press
Led-Segment NO
On
Plugged in
YES
Power button
Drum not YES Lock:No buzzer
Roating
Circuit breaker
Start button Lock:
NO trip
: No buzzer
(Rotating)
Low voltage
YES
Door Open?
Door is not closed See the Page 24 Low temperature
(" ") display check list
NO
Lamp on?
Harness Wire
NO Drum Belt broken Replace Belt
broken
Lamp Broken
Connector malfunction Led broken
Check Filter sign Clean filter and
NO Properly glitters Condenser
Display pcb
Drying? wire broken
Check Heater Power Empty water sign Empty water
container
Thermostat trip
YES Over clothes Load
Check thermistor open/short
Motor malfunction
Fan
Power-Off
20
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11 DIAGOSTIC TEST
Test 1 : ELECTRIC SUPPLY & CONTROL CHECK
Trouble Symptom : No power to the dryer or the controller
Measurement condition : Power is on.
[ Caution] Electric shock. Please test after grounding check.
Power voltage is within · Check the
standard range - Circuit breaker
(AC 215V~245V)?
WH2 RLY1 · Check after pulling Black 2 · Check or replace the
pin and WH2 connector out controller
from controller.
· Check the harness
· Check the range of black pin
Black pin 4 ~WH2 pin 2 is
within AC 215~245V?
· Check connection of power · Check or replace the
cord and harness assembly. power cord
· Check WH2 pin 2 - Black
pin 4 of connector and secure · Check the WH2 Pin 2
that range is between AC
215~245V?
Check the short of harness
assembly and the connection.
In the case that the dryer is not working, when controller is
powered and display button is properly working, Check
RLY1 in the controller.
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11 DIAGOSTIC TEST
Test 2 DOOR SWITCH / LAMP CHECK
Trouble Symptom : Malfunction of lamp operation and door switch
No operation of pump motor
Displays " " in case of the door closed.
The door must be closed and start.
Measurement condition : Check if they are working while being connected to power supply.
When door is opened, lamp Check door switch
turns on? movement.
(Tumbling stops) - See the left picture.
Check and replace lamp.
- See the 14,16 page
When door is closed, lamp · Door switch is working
turns off? normally.
When "Start" button is
pressed, the dryer is working?
When door is opened or · Replace door hook and
closed, door switch hook is close the door.
not broken?
· With door closed, check voltage of · Door frame is distorted
connector RLY 1 and YL3 2 · Check door switch
which are pulled out from - See 16 page
controller in advance. The voltage
range is between AC 215~245V?
Check or replace Controller Assembly
Replace Harness and connector
· With door closed, when
"Start" button is pressed,
lamp turns off and
controller is working, but
the dryer is not working.
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11 DIAGOSTIC TEST
Test 3 Motor check
Trouble Symptom : Motor malfunction, Occurrence of the "Clean filter" repeatedly
Measurement condition : · Power cord is unpluged.
· Door is closed.
· Check the user condition.
- Put over load into drum?
- Normally Input Voltage and Hertz?
· Pre-Check door switch
(If door switch has contact problem, pump motor is not working.)
· Before check process, Check
the motor rotating by the
Diagnostic test mode "See the · Check the harness connection.
19 page". - Motor part : Blue 2 pin
housing.
- Controller part : Blue 2 pin
housing ( Orange and Blue
· When power is on and press wire ).
the start button, motor is - Capacitor part : White 2 pin
housing.
rotating. · Check the belt ( position /
broken ).
· Check the Controller
- TR1 , TR2 Broken ?
· Check the slide ( 3 ea ).
· During operation, motor noise · Check Capacitor volume.
is occurred ? - See component test page.
- See the left picture.
· Check belt is burst.
· Check structural restriction.
( Motor supporter / Air guide
Blower )
RLY1 BL2 With RLY1, BL2 being unplugged · Check or replace Motor
from Controller, - Check Motor TP
1) RLY1 1 - BL2 1 resistance · Check Harness connection
2) RLY1 1 - BL2 2 resistance · Check the Motor resistance.
measurement ranges 18~26 ? (see page 15 )
· Check controller
-See page 17
(PCB Assembly Lay-out)
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11 DIAGOSTIC TEST
Test 4 Heater check Trouble Symptom : Motor malfunction, ventilation error
Trouble Symptom : Heater is not working. Drying failure. The designated
temperature is not reached.
Measurement condition : 1 Power cord is unplugged.
RLY2 RLY1
With Tab relay housing · Check and replace
disconnected from Controller, controller.
1) RLY1 2 - RLY2 1 resistance · RLY2 ~ WH2
ranges 26~32 ? · See page 17, PCB
2) RLY1 2 - WH2 pin 1 assembly lay-out.
WH2 RLY1
resistance ranges 53~59 ?
When check thermostat to · Replace Heater
Heater,
· Check Harness
it is less than 1? connection
Manually get Thermostat
back (Press button )
Heater On/Off occurs 1. Clean Condensing unit :
frequently 2. Check if Lint filter is
damaged or clogged
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11 DIAGOSTIC TEST
Test 5 Pump check
Trouble Symptom : Check if pump is out of order. " Empty water" signals.
Measurement condition : Power cord is unplugged.
Check the hose blocked with foreign body or twist.
(Measure with power on) · Disassemble Pump
On QC test mode, when Pump - Check foreign objects
is on, - Check impeller
Electric noise doesn't occur restriction
while pumping? - Check connection
hose clogged
(Measure after power is off.) · Check or replace pump
With YL3 disconnected from · Check Harness
Controller, connection
YL3 1 - YL3 2 resistance
ranges 205±10 ?
· Check Pump sensor
· Check and replace Controller
- TR3
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11 DIAGOSTIC TEST
Test 6 Thermister check
Trouble Symptom : Poor drying performance(over-drying or no drying). Abnormal
thermistor operation.
Measurement condition : Power cord is unplugged.
RD4 WH6 With RED 4 , WHITE 6 disconnected from · Check and replace
Controller, check Controller.
1) High temperature thermistor ( Wire color : 1) Check disconnected
Blue ) White 6 pin 3 - White 6 pin 4 Housing or severed
resistance ranges table data according to Wire.
surrounding temperature. 2) Check the resistance
2) Low temperature thermistor ( Wire color : of thermistor.
Blue ) Red 4 pin 2 - Red 4 pin 4 3) Replace controller
resistance ranges table data according and then recheck,