LG FH2D7RD Series User manual

WASHING MACHINE
SERVICE MANUAL
READ THIS MANUAL CAREFULLY TO DIAGNOSE TROUBLES
CORRECTLY BEFORE OFFERING SERVICE.
FOR LG TECHNICIAN
MODEL : FH2D7RD*
CAUTION

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FOR LG TECHNICIAN
CONTENTS
1. SPECIFICATION .......................................................................................................................3
2. FEATURES & TECHNICAL EXPLANATION .............................................................................4
3. PARTS IDENTIFICATION..........................................................................................................7
4. INSTALLATION .........................................................................................................................8
5. WIRING DIAGRAM / PROGRAM CHART ..............................................................................11
6. OPERATION............................................................................................................................12
7. TROUBLESHOOTING ............................................................................................................14
7-1. BEFORE SVC CHECKING .............................................................................................14
7-2. QE TEST MODE .............................................................................................................14
7-3. HOW TO KNOW THE WATER LEVEL FREQUENCY....................................................14
7-4.
HOW TO KNOW TO TEMPERATURE OF EACH THERMISTOR AT OPERATING CONDITION .. 15
7-5. ERROR DISPLAY............................................................................................................15
7-6. SMART DIAGNOSIS™ ...................................................................................................17
8. ERROR DIAGNOSIS AND CHECK LIST ................................................................................18
8-1. DIAGNOSIS AND ANSWER FOR ABNORMAL OPERATION........................................18
8-2. FAULT DIAGNOSIS AND TROUBLE SHOOTING..........................................................21
9. DISASSEMBLY INSTRUCTIONS ...........................................................................................31
10. EXPLODED VIEW.................................................................................................................39
10-1. THE EXPLODED VIEW OF CABINET & CONTROL PANEL ASSEMBLY....................39
10-2. THE EXPLODED VIEW OF DRUM & TUB ASSEMBLY ...............................................40
10-3. THE EXPLODED VIEW OF DISPENSER ASSEMBLY.................................................41
10-4. THE EXPLODED VIEW OF DRYER ASSEMBLY.........................................................42

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FOR LG TECHNICIAN
1. SPECIFICATION
ITEM FH2D7RD7
COLOR STAINLESS SILVER
POWER SUPPLY 220V / 60Hz (FH2D7RD7)
PRODUCT WEIGHT 81 kg
ELECTRIC
POWER
CONSUMTION
WASHING 190 W
WASH HEATER 2000 W
DRYING 2100 W
REVOLUTION
SPEED
WASH 46 rpm
SPIN Extra Low / Low / Medium / High / Extra High
CYCLES 12
WASH / RINSE TEMPERATURES 5
SPIN SPEEDS 5
OPTIONS Turbowash, Time Delay, Tub Clean,
Dry, Add Load, Time Dry, Child Lock
WATER CIRCULATION Incorporated
OPERATIONAL WATER PRESSURE 14.5-145 psi (100-1000 kPa)
CONTROL TYPE Electronic
WASH / DRY CAPACITY 14 kg / 8 kg
DIMENSIONS 645 mm (W) X 770 mm (D) X 940 mm (H)
DELAY WASH up to 19 hours
DOOR SWITCH TYPE PTC + Solenoid
WATER LEVEL 5 steps (5 steps)
LAUNDRY LOAD SENSING Incorporated
ERROR DIAGNOSIS Incorporated
AUTO POWER OFF Incorporated
CHILD LOCK Incorporated
RLM ENABLE -
NFC NFC Tag on Function

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FOR LG TECHNICIAN
2. FEATURES & TECHNICAL EXPLANATION
2-1. FEATURES
Direct Drive System
The advanced Brushless DC motor directly drives the drum without belt and pulley.
6 Motion
Washer is able to perform various drum actions or a combination of different actions
depending on the wash program selected.
Combined with a controlled spin speed and the ability of the drum to rotate both
left and right, the wash performance of the machine is greatly improved, giving you
perfect results every time.
Turbo Wash
S
Tag On
S
Water Circulation
Sprays detergent solution and water onto the load over and over.
Clothes are soaked more quickly and thoroughly during wash cycle.
The detergent suds can be removed more easily by the water shower during rinse
cycle. The water circulation system uses both water and detergent more efciently.
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Tilted Drum and Extra Large Door Opening
Tilted drum and extra large opening make it possible to load and unload clothing
more easily.
Embossing drum & waved lifter
Embossing drum enhances the washing performance and reduces clothes damage.
The waved lifter spray and help clothes to enhance washing performance during
the washing cycle.
Automatic Wash Load Detection
Automatically detects the load and optimizes the washing time.
Built-in Heater
Internal heater helps to maintain water temperature at its optimum level for selected
cycles.
Child Lock
The Child lock prevents children from pressing any button to change the settings-
during operation.
Smart Diagnosis™
S

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FOR LG TECHNICIAN
2-2. NEURO FUZZY WASHING TIME OPTIMIZATION
To get the best washing performance, optimal time is determined by the water temperature,
the selected washing temperature, and the size of the load.
water
temperature
washing time
rinsing time
the best
washing
performance
spin rhythm, time
selected
washing
temperature
NEURO-
FUZZY
SENSING PROCESSING
DETERMINATION EFFECT
load
size
2-3. WATER LEVEL CONTROL
This model incorporates a pressure sensor which can sense the water level in the tub.z
The water supply is stopped when the water level reaches the preset level, the washing program thenz
proceeds.
Spinning does not proceed until the water in the tub drains to a certain level.z
2-4. DOOR CONTROL
The door can be opened by pulling the door handle whenever washer is not in operation.z
When the cycle is completed, the DOOR LOCKED light will turn off.z
If a power failure has occurred while in operation, the door will unlock after 5 minutes.z
Clicking sounds can be heard when the door is locked/unlocked.z

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FOR LG TECHNICIAN
2-5. THE DOOR CAN NOT BE OPENED
While program is operatingz
When a power failed and power plug is taken out in operationz
While Door Lock lights turn on.z
While the motor is in the process of intertial rotating, through the operation is paused.z
2-6. DOOR LOCKED LAMP LIGHTS
When the frequency of water level is lower than 22.9 kHzz
(It can be canceled when the frequency is more than 23.8 kHz)
When the temperature inside the tub is higher than 45 °∆C and water level is not 25.5 kHz.z
(It can be canceled when the water level is 25.5 kHz or the temperature inside the tub is lower than
40°C)
2-7. CHILD LOCK
Use this option to prevent unwanted use of the washer. Press and hold the Wash and Rinse button forz
3 seconds to lock/unlock control.
When Child lock is set, CHILD LOCK lights and all buttons are disabled except the Powerzbutton.
You can lock the washer while it is operating.
2-8. WATER CIRCULATION
When Washing and Rinsing function of shower at the upper part of Gasket.z
When Washing, it continuously operates for 3 minutes and intermittently.z
When Rinsing, it continuously operates after completion of water supply.z
2-9. NFC (Tag On Function)
Can use Tag On Course Download and Tag On Diagnosisz
The Tag On function can only be used with smart phones equipped with the NFC function and basedz
on the Android operating system (OS).
Position your smart phone so that the NFC antenna on the back of your smart phone matches thez
position of the Tag On icon on the appliance.
NFC reading performance of your smart phone must be higher than a certain level for using thisz
function.

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FOR LG TECHNICIAN
3. PARTS IDENTIFICATION
Inlet Hose
Dispenser
Drum
Door
Drain Hose
Drain Pump Filter
Drain Plug
Power Plug
Shipping Bolts
Control Panel
Lower Cover Cap
Adjustable Feet
• If the supply cord is damaged,
it must be replaced by the
manufacturer or its authorized
service technician in order to
avoid a hazard.
ACCESSORIES
Inlet hose (1EA) Wrench Elbow Bracket
(for securing drain hose)
Non-skid pads
Caps(4)
(for covering shipping bolt
holes)
Cold Water
Inlet
Air Vent for
Safety
Back of Washer

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FOR LG TECHNICIAN
4. INSTALLATION
1Before servicing ask troubles of customers.
2Check the adjustment(power supply is 127V ac 60Hz, remove the transit bolts....).
3Check the troubles referring to the trouble shooting.
4Decide service steps referring to disassembly instructions.
5And then, service and repair.
6After servicing, operate the appliance whether it works OK or NOT.
STANDARD INSTALLATION
The appliance should be installed as follows:
REMOVE THE TRANSIT
BOLTS
INSTALL THE APPLIANCE
ON FLAT AND FIRM SURFACE
ADJUST THE
LEVELING
Remove the transit boltsz
(4EA: )with supplied
spanner.
Keep the transit bolts andz
spanner for future use.
Insert the 4 caps provided intoz
the hole.
1
2
Turn the leveling feet to adjustz
the appliance.
Lower
Higher
Turn clockwise to raise;z
counterclockwise to lower.

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FOR LG TECHNICIAN
HOW TO CONNECT THE INLET HOSE
Verify that the rubber washer is inside of the valve connector.z
Tighten the inlet hose securely to prevent leaks.z
CONNECT THE DRAIN HOSE
Make sure that the hose is not twisted.zAvoid submerging the end of the hose.z
※ The end of the drain hose should be placed less than 100 cm from the oor.
CONNECT THE DRAIN HOSE
Connect the power plug to the wallz
outlet.
Avoid connecting several electricz
devices, as doing so may cause a re.
Cold

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FOR LG TECHNICIAN
Preparation for
washing.
Check the water heating
function.
Check the drain and spin
functions.
Press the POWER
button.
Check the automatic
reverse rotation.
Press the Start/Pause
button.
Press the Start/Pause
button.
Check the water
supply.
Water removal.
Connect the power plug to•
the outlet.
Connect the inlet hose.•
Press the WASH/RINSE button•
and the present temperature will
be displayed.
Power off and the power on.•
Press the SPIN SPEED button•
Press the START/PAUSE button.•
Check the spin and drain•
functions.
Check if the drum rotates•
clockwise and counterclockwise.
• Listen for a click to determine if the
door is unlocking.
Listen for a click to determine•
if the door has locked.
Check if water is supplied through•
the detergent dispenser.
• If SERVICE is needed during
check, remove the remaining
water by pulling out the hose cap.
1
6
7
2
5
8
3
4
9
7TEST OPERATION

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FOR LG TECHNICIAN
5. WIRING DIAGRAM / PROGRAM CHART

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FOR LG TECHNICIAN
6. OPERATION
POWER BUTTON
START/PAUSE BUTTON
CYCLE
SELECTOR knob
EST.TIME REMAINING
CHILD LOCK
• Use this button to turn the
power On/Off.
• Use this button to Start/Stop the
washer.
• Rotate the Cycle selector
knob to select the cycle
designed for different types
of fabric and soil levels.
• This display shows:
a) the estimated time remaining in the
cycle when operating.
b) an error code when an error has been
detected.
• Use this option to prevent unwanted use of the
washer. Press and hold Option and Rinse button for
3 seconds to lock/unlock control.
• When Child lock is set, CHILD LOCK lights and all
buttons are disabled except the Power button.
You can lock the washer while it is operating.

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FOR LG TECHNICIAN
Option Button
WASH BUTTON RINSE AND SPIN BUTTON
Temp. Button
• Turbo wash: The option uses the Twin Spray and Optimization features of the washer to save time without
sacricing performance.
• Time Delay: Allows the start of any cycle to be delayed for 3~19 hours.
• Tub Clean: Use this function to sanitize drum to remove any bacteria and keep the drum clean.
• Dry: Use this function when you want to dry wet laundry.
• Add Load: Use this function to add loads or remove the foreign material.
• Time Dry: The drying time can be selcted in 30-minute increments : 30-60-90-120-150 minutes.
• Pre Wash: Use this option for loads that need pretreatment.
This adds 16 minutes of prewashing before
draining.
• Intensive: If the laundry is heavily soiled “intensive” option is
effective.
• Normal: This option is automatically selected in every
course except for Rinse+Spin.
• Light: This cycle is suitable for lightly soiled clothing.
• Soak:
• To change the Rinse cycling, press the
Rinse button repeatedly through avail-
able options.
• To chacge the Spin speed, press the
Spin speed button repeatedly to cycle
through available options.
• Select a water temperature
based on the type of load you
are washing.

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FOR LG TECHNICIAN
7. TROUBLESHOOTING
7-1. BEFORE SVC CHECKING
Be careful of electric shock or disconnecting the parts while trouble shooting.
Voltage of each terminal is 220-240V~ and DC while applying an electric current.
7-2. QC TEST MODE
The washer must be empty and the controls must be in the off state.
1. Press the Rinse and Temp buttons simultaneously.
2. Press the Power button, while the above condition. Then buzzer will sound twice.
3. Press the Start/Pauser button repeatedly to cycle through the test modes.
7-3. HOW TO KNOW THE WATER LEVEL FREQUENCY
 Press the Rinse and Temp. button simultaneously.
Number of times the
Start/Pause button is pressed
Check Point Display Status
None
Turns on all lamps and locks the door
1 time Tumble clockwise rpm(40~50)
2 times Low speed spin rpm(55~70)
3 times High speed spin rpm(100~120)
4 times Inlet valve for prewash turns on. Water level frequency (25~65)
5 times Inlet valve for main wash turns on. Water level frequency (25~65)
6 times No Move Water level frequency (25~65)
7 times Inlet valve for Atomizing turns on. Water level frequency (25~65)
8 times
9 times
Tumble counterclockwise
10 times Tumble counterclockwise
11 times
12 times
13 times
Drying Fan turn on for 6min, and then
heater turn of for 6min.
14 times off

The digits means water level frequency(10-1 kHz)
ex) 241 : Water level frequency = 241 x 10-1 kHz
= 24.1 kHz

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FOR LG TECHNICIAN
7-4. HOW TO KNOW TO TEMPERATURE OF EACH THERMISTOR AT
OPERATING CONDITION.
Thermistor in tub : Press the [Temp.] button.
Thermistor in dry duct : Press the [Turbo Steam] button.
7-5. ERROR DISPLAY.
If you press the START/PAUSE button when an error is displayed, any error except• will disappear
and the machine will go into the pause status.
In case of• , , if the error is not resolved within 20 sec., or the in case of other errors,
if the error is not resolved within 4 min., power will be turned off automatically and the error code will
blink. But in the case of , power will not be turned off.
ERROR SYMPTOM CAUSE
1WATER INLET
ERROR
Correct water level (246) is not reached within 8 minutes after•
water is supplied or it does not reach the preset water level
within 25 minutes.
2IMBALANCE
ERROR
The load is too small.•
The appliance is tilted.•
Laundry is gathered to one side.•
Non distributable things are put into the drum.•
3DRAIN
ERROR
The sensor pressure switch is out of order.•
4OVER FLOW
ERROR
Water is over owing(over 8 level).•
※ If is displayed, drain pump operates to drain water
automatically.
5
PRESSURE
SENSOR
ERROR
The SENSOR SWITCH ASSEMBLY is out of order.•
6DOOR OPEN
ERROR
Door not all the way closed.•
Loose electrical connections at Door switch and PWB Assembly.•
The DOOR SWITCH ASSEMBLY is out of order.•
7HEATING
ERROR
The THERMISTOR is out order.•

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FOR LG TECHNICIAN
ERROR SYMPTOM CAUSE
8
OVER
CURRENT
ERROR
MAIN PWB ASSEMBLY is out of order.•
Winding in the STATOR ASSEMBLY is short-circuited.•
9
LOCKED
MOTOR
ERROR
The connector (3-pin, male, white) in the MOTOR HARNESS•
is not connected to the connector (3-pin, female, white) of
STATOR ASSEMBLY.
The electric contact between the connectors (3-pin, male, white)•
in the MOTOR HARNESS and 4-pin, female, white connector in
the MAIN PWB ASSEMBLY is bad or unstable.
The MOTOR HARNESS between the STATOR ASSEMBLY and•
MAIN PWB ASSEMBLY is cut (open circuited).
The hall sensor is out of order/defective.•
10
DRY
HEATER
ERROR
The Dry Heater is out of order•
☞ Replace the Dry Heater
The Connector of the Dry Heater is not connected properly to•
the connector in the Main PWB ASSEMBLY
☞ Reconnect or repair the connector
The Dry fan motor is out of order•
☞ Replace the fan Motor.
11

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FOR LG TECHNICIAN
7-6. Smart Diagnosis™
SMARTDIAGNOSIS™ function is available
only for the products with a SMARTDIAG-
NOSIS™ mark. In case of a mobile phone
with static option, the smart diagnosis
function might not operate.
Note
Using SmartDiagnosis™
Only use this feature when instructed to do so•
by the call center. The transmission sounds
similar to a fax machine, and so has no mean-
ing except to the call center.
SMARTDIAGNOSIS™ cannot be activated if•
the washer does not power up. If this happens,
then troubleshooting must be done without
SMARTDIAGNOSIS™.
If you experience problems with your washer,
call to Customer information center. Follow the
call center agent’s instructions, and do the fol-
lowing steps when requested:
1. Press the Power button to turn on the wash-
er. Do not press any other buttons or turn the
cycle selector knob.
2. When instructed to do so by the call center,
place the mouthpiece of your phone very
close to the Power button.
Max. 10 mm
3. Press and hold the “Temp.” button for three
seconds, while holding the phone mouth-
piece to the icon or Power button.
4. Keep the phone in place until the tone trans-
mission has nished. This takes about 17
seconds, and the display will count down the
time.
• For best results, do not move the phone
while the tones are being transmitted.
• If the call center agent is not able to get an
accurate recording of the data, you may be
asked to try again.
• Pressing the Power button during the trans-
mission will shut off the SMARTDIAGNO-
SIS™ .
5. Once the countdown is over and the tones
have stopped, resume your conversation with
the call center agent, who will then be able to
assist you using the information transmitted
for analysis at the call to Customer informa-
tion center.
Smart Diagnosis is a troubleshooting feature•
designed to assist, not replace, the traditional
method of troubleshooting through service
calls. The effectiveness of this feature de-
pends upon various factors, including, but not
limited to, the reception of the cellular phone
being used for transmission, any external
noise that may be present during the transmis-
sion, and the acoustics of the room where the
machine is located.
Accordingly, LG does not guarantee that
Smart Diagnosis would accurately trouble-
shoot any given issue.

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FOR LG TECHNICIAN
8-1. DIAGNOSIS AND ANSWER FOR ABNORMAL OPERATION
8. ERROR DIAGNOSIS AND CHECK LIST
SYMPTOM GUIDE FOR SERVICE CALL
NO POWER Is the power plug connected rmly to
AC 127V outlet?
YES
Power failure? or Breaker opened?
NO
Visit to check
Water inlet trouble Is “ “ displayed?
YES
Is the tap opened?
YES
Is the tap frozen?
NO
Is the water supply shut-off?
NO
Is lter in the inlet valve clogged with
foreign material? YES
NO
Clean the lter of
inlet valve
Visit to check

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FOR LG TECHNICIAN
SYMPTOM GUIDE FOR SERVICE CALL
Door error Is lter in the inlet valve clogged with
foreign material? YES
NO
Close the door.
Was the load too large? YES
NO
Avoid overloading.
Clicking sound is heard once or twice,
when the START/PAUSE button is
pressed to start the cycle?
NO
Visit to service.
Check if the door switch is OK.
Drain trouble
Is displayed?
YES
Is the drain pump lter clogged with foreign
material such as pins, coins, etc? YES
NO
Clean
up the
lter
Is the drain hose frozen kinked, or
crushed?
NO
Visit to service.

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FOR LG TECHNICIAN
SYMPTOM GUIDE FOR SERVICE CALL
Suds overow from
the appliance.
(In this condition,
wash and spin do
not operate nor-
mally)
Is a low-sudsing detergent used?
YES
Is the proper amount of detergent used
as recommended?
YES
Recommend to reduce the amount
of detergent.
This appliance has an automatic suds sensing
function which prevents overow.
When excessive suds are sensed, the suds
removing implementations such as drain, water
input, pause will operate, without rotating the
drum.
Liquid laundry
products do not ow
in.
Is liquid laundry product put in the correct
compartment of the dispenser?
YES
(1) Main Wash Compartment
(2) Prewash Compartment
(3) Liquid fabric Softener
Compartment
Is the cap clogged?
YES
Explain proper use of liquid laundry
products.
Clean the compartment.
Visit to service.