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NO

YES

YES

YES

YES

NO

NO

NO

NO

YES

BL

WH

WH

WH

WH

RD

BL

BL

BL

OR

RD

BL

(1)

BL

WH

WH

WH

WH

RD

BL

BL

BL

OR

RD

BL

(2)

Is the supplied voltage 120 V AC?

Is the voltage between the pins of 2 FILTER
ASSEMBLY connector 120 V AC?

Is the LED (1) on?

Are the connectors (2) on the PWB loose?

Is wire of the DISPLAY PWB ASSEMBLY  
broken?

Replace  DISPLAY PWB ASSEMBLY 
or repair wire.

Check the fuse or reset
the circuit breaker.

Replace the FILTER
ASSEMBLY (CIRC).

Replace MAIN PWB
ASSEMBLY.

Reconnect.

Replace the MAIN PWB
ASSEMBLY.

8-2. FAULT DIAGNOSIS AND TROUBLESHOOTING

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

If it still has severe vibration and noise, regulate a specific spin speed that generates excessive vibration and

noise as follows:
1) Put an unbalance part (rubber) inside of the drum.
2) Start the QC test mode (Refer to section 7-2).
3) Press Delay Wash button, then '

' is displayed.

4) Press the Spin Speed button repeatedly to select EXTRA HIGH.
5) Press the Start/Pause button.
6) Press the Signal button repeatedly to set spin speed (600, 700, 800, 900, 1000, 1100 rpm) and check if there

is vibration and noise.

7) If there is no vibration and noise, increase the spin speed by pressing Signal button.
8) If there is vibration and noise, press the Cycle selector button to reduce the Spin Speed (reduce by 50 and 100

rpm). In case of 600 rpm, it can not reduce the spin speed.

9) If vibration and noise are reduced, press the WASH/RINSE button to store (2 beep sounds).
* If you want to return to factory default spin speed setting, repeat above steps except step 8).

SOFTENER

MAX

(4) Main Wash Compartment

4

Is water supply shut-off?

Is the tap opened?

When you press both SPIN SPEED button and
SOIL LEVEL button simultaneously, is the water
level frequency below 246?

Is the inlet valve filter clogged?

Is resistance between each terminal of INLET
VALVE ASSEMBLY 0.8-1.2 

k

Ω

? 

Verify the voltage of the inlet valve connector is 

120 V AC.

(Refer to 7-2 QC TEST MODE)

Is water supplied?

Are receptacles correctly connected to the
terminals of the INLET VALVE ASSEMBLY?

Has detergent been put in the correct compartment
of the dispenser?

Is the detergent caked or hardened?

Open the tap.

Check the AIR CHAMBER
and the tube (clogged). 

Clean the filter.

Replace the INLET VALVE
ASSEMBLY.

Check electrical connection.
Replace the MAIN PWB
ASSEMBLY.

Refer to 

^NO WATER SUPPLY_

Check the wiring.

Put the detergent in the
correct place. 

Clean the dispenser.