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