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8-2.FAULT DIAGNOSIS AND TROUBLE SHOOTING

1. Be careful of electric shock or disconnecting the parts while trouble shooting.

2. First of all, check the connection of each part terminal with wiring diagram.

3. If you replace the MAIN PWB ASSEMBLY, Put in the connectors correctly.

NO

NO

YES

YES

YES

NO

NO

YES

   

   

Check the fuse?

Replace MAIN PWB
ASSEMBLY

Reconnect the PWB
ASSEMBLY

Reconnect the PWB
ASSEMBLY

When measuring the voltage of the outlet, 

is the voltage AC 220-240V~?

Is the led(1) on?

Is connector(2)  disconnected or

disassembled?

Is wire of the PWB ASSEMBLY disconnected?

Replace PWB ASSEMBLY

CAUTION

NO

YES

NO

NO

YES

NO

YES

YES

NO

NO

YES

YES

YES

NO

NO

NO

YES

5

4

Dry

Steam

Steam

Dry

Is water supply shut-off?

Is the tap opened?

When you press both Rinse button and Spin button
simultaneously, is the water level frequency below
240?

Is the inlet valve filter clogged with impurity?

Is resistance between each terminal of INLET
VALVE ASSEMBLY is 2~8

kΩ

?

Check the voltage of the inlet valve connector 

AC 220-240V~.

(Refer to 7-2 QC TEST MODE)

Is water supplied?

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

Is detergent put in the correct compartment of
the drawer?

Is the detergent hardened?

Open the tap.

Check the AIR CHAMBER
and the tube clogged 
with impurity. 

Clean the filter.

Replace the INLET VALVE

ASSEMBLY.

Replace the MAIN PWB

ASSEMBLY

Refer to 

「NO WATER SUPPLY」

Check the wiring on the
dispenser.

Put the detergent in the

correct position 

: Detergent 

Clean the drawer.

YES

YES

NO

NO

NO

NO

YES

YES

YES

YES

Steam

Dry

Fix the bolt tightly.

Replace the STATOR
ASSEMBLY or ROTOR
ASSEMBLY.

Refer to

「NO WATER SUPPLY」

Check the wiring on the 
dispenser.

Put it in the correct
compartment.

Clean the cap and
drawer.

Is the motor bolt loosened?

Is there friction noise from the motor?

Is water supplied?

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

Is softener put in the correct compartment of the

drawer?

Is the softener cap clogged?

(1)

(2)

AC 220-240V

Replace the
S.PRESSURE SWITCH
ASSEMBLY

Replace the MAIN PWB
ASSEMBLY

Repair the DRAIN HOSE
ASSEMBLY.

Remove foreign material.

Reconnect or repair the
connector

Repair the DRAIN PUMP
ASSEMBLY.

Repair the MAIN PWB
ASSEMBLY.

When pressing Rinse and Spin at the same time
after draining, is  the water level frequency 255?  
When pressing Rinse and Spin buttons at the
same time while washing, is the water level
frequency between 230 - 243 ?

After completely drained and turn 
off water, the washing machine is 
operated under the [Sanirary] condition.
Check the voatage between two pins is the 
Voltage 0 V AC?

Is the drain hose twisted or frozen?

Is the impeller of the drain pump clogged?

Is the connector disconnected, disassembled?

Is the coil of the drain pump cut-off?
(resistance of coil is 80~150Ω)

When checking voltage between connectors

(①, ②)on spinning, is the voltage 220-240V 

as the figure?