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NO

YES

NO

NO

YES

NO

YES

YES

NO

NO

YES

YES

YES

NO

NO

NO

YES

Is water supply shut-off?

Is the tap opened?

When you press both Intensive button and
Option(Left) 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

k

Ω

?

Check the voltage of the inlet valve connector 

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

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?

Replace the

S.PRESSURE SWITCH

ASSEMBLY

Replace the POWER
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 Intensive and Option(Left) at the
same time after draining, is  the water level frequency
248 ~ 262 or more?  
When pressing Rinse and Temp. buttons at the
same time while wash, is the water level
frequency between 230 - 243?

Checking voltage between two pins (Connector
RD 

① & YL ②) as press the POWER button is the

voltage  220-240V~?

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

(

①

, 

④

)on spinning, is the voltage 220-240V~ 

as the figure?

WH/RD

(Refer to the 7-2 QC Test Mode)

BLUE

Option(Left) and Temp. 

temperature?

button simultaneously