LG WM1873FDS Service Manual ▷ View online
29
FOR AUTHORIZED SERVICE TECHNICIAN
8-5. TROUBLESHOOTING ELSE
NO POWER
1. Be careful of electric shock if disconnecting parts while troubleshooting.
2. First of all, check the connection of each electrical terminal with the wiring diagram.
3. If you replace the MAIN PWB ASSEMBLY, reinsert the connectors correctly.
CAUTION
Check the
fuse or reset
the circuit
breaker.
Yes
No
Is the current rating of
multi-outlet power strip
enough?
(Avoid connecting several
electric devices.)
Is the supplied voltage
120V AC?(+10%, -15%)
Alternate with
explanation.
Yes
Yes
No
Is the connector connected
to PCB/Noise filter
disconnected or
disassembled?
Reconnect
or repair
the connector.
No
Replace the
MAIN PWB
ASSEMBLY.
Yes
No
Is LED on while the power
is on?
Replace the
DISPLAY
PWB
ASSEMBLY.
Display PWB
Connecting connector
MAIN PWB~ Display PWB
No
Is five pin wire of
display PWB broken?
30
FOR AUTHORIZED SERVICE TECHNICIAN
BUTTON DOESNʼT WORK
31
FOR AUTHORIZED SERVICE TECHNICIAN
32
FOR AUTHORIZED SERVICE TECHNICIAN
DETERGENT DOES NOT FLOW IN
Refer to
NO WATER
SUPPLY.
Yes
Yes
No
Has detergent been put in
the correct compartment
of the dispenser?
(1) Liquid chlorine Bleach Compartment
(2) Liquid fabric Softener Compartment
(3) Prewash Compartment
(4) Main Wash Compartment
Is the detergent caked or
hardened?
Is water supplied?
Check the
wiring.
No
Are receptacles correctly
connected to the terminals
of the INLET VALVE
ASSEMBLY?
Put the
detergent in
the correct
place.
Clean the
dispenser.
Yes
Yes
No
Pre wash
Main wash
: Detergent
Prewash
Hot water
Main wash
bleach
Dry
(1)
(4) (3)
(2)
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