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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.

CAUTION

When measuring the voltage of the outlet,
is the voltage AC 127V~?

Is the led(1) on?

Is connector(2) disconnected or disassembled?

Is wire of the PWB ASSEMBLY disconnected?

Replace PWB ASSEMBLY

Check the fuse?

Replace MAIN PWB
ASSEMBLY

Reconnect the PWB
ASSEMBLY.

Reconnect the PWB
ASSEMBLY

: Detergent

Is water supply shut-off?

Is the tap opened?

Open the tap.

Check the AIR CHAMBER
and the tube clogged
with impurity.

Clean the filter.

Refer to

NO WATER SUPPLY

Check the wiring on the
dispenser.

Put the detergent in the
correct position

Clean the drawer.

Replace the INLET
VALVE ASSEMBLY.

Replace the MAIN PWB
ASSEMBLY.

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 water supplied?

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

Is detergent put in the correct compartment of
the drawer?

Is the detergent hardened?

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

Ω?

Check the voltage of the inlet valve connector
AC 127V~.
(Refer to 7-2 QC TEST MODE)

Is water supplied?

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

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

Is the detergent caked or hardened?

Is water supply shut-off?

Is the tap opened?

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

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.

Is the inlet valve filter clogged?

Is resistance between each terminal of INLET

VALVE ASSEMBLY 0.8-1.2

?

Verify the voltage of the inlet valve connector is

220-240V AC.

(Refer to 7-2 QC TEST MODE)

 

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
[Sanitary] 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 80~150 Ω)

When checking voltage between connectors
(

, 

)on spinning, is the voltage 127V

as the figure?

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.