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NO

YES

YES

YES

YES

NO

NO

NO

NO

YES

Connector

Is the supplied voltage 220~240 V AC?

Is the voltage between the 2 FILTER ASSEMBLY
connectors 220~240 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

YES

YES

YES

NO

NO

Higher

Unbalance Part

Lower

Adjustable feet

Lock

Nut

Adjustable feet

Base Packing

Level

Have all the transit bolts and base packing
been removed?

Remove the transit bolts
and Base packing.

Move the washer or
reinforce the floor.

Is the washer installed on a solidly constructed
floor?

Check if the washer is perfectly level as follows:

Check the leveling of the washer with a Level
and check that the washer is stable.

Put an unbalance part (rubber) inside of drum
and start QC test mode and run in high spin
(Refer to section 7-2). 
When the machine is spinning in high speed,
verify that it is stable.

If it is not stable, adjust feet accordingly. After
the washer is level, tighten the lock nuts up
against of the base of the washer. All lock nuts
must be tightened.

If you do not have the unbalance part, put 4.5 to
6.5 lbs (2 to 3 kg) of clothing. Once loaded,
press power, Rinse+Spin and the start/pause
button in sequence.
When the machine is spinning in high speed,
verify that it is stable. 

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 Quick Cycle button, the spin speed is displayed.

6) Press the Start/Pause button.

7) Press the Dry button repeatedly to set spin speed (400, 800, 1000, 1200 rpm) and check if there is vibration

and noise.

8) If there is no vibration and noise, increase the spin speed by pressing Dry button.

9) If there is vibration and noise, rotate the Cycle selector knob clockwise to reduce the Spin Speed (reduce by 50

and 100 rpm). In case of 600 rpm, it can not reduce the spin speed.

10) If vibration and noise are reduced, press the Quick Cycle button to store (2 beep sounds).

* If you want to return to factory default spin speed setting, repeat above steps except step 9).

Dry

Dry

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 

220~240 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.