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8-2.FAULT DIAGNOSIS AND TROUBLESHOOTING

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

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

3. If you replace the PWB assembly (Main), put in the connectors correctly.

CAUTION

PWB ASSEMBLY

1

Check the fuse?

Check the harness
Assembly.

Cancle the 
Child-Lock by
pressing [Temp.] and
[Option]
simultaneously for 3
seconds.

Normal

When measuring the voltage of the outlet, 

is the voltage AC 220-240V?

When measuring the voltage of White(3pin)

connector of the PWB assy, is the voltage

AC 220-240V?

Replace PWB  assembly.

Does the Child-Lock is set?

First, unplug the power cord and plug again.
Check the buttons are operable.

Visit to check

Wiring diagram

option (HOT)

option (HOT)

MAX

max

Is the water supply shut-off?

Is the tap opened?

Is the inlet valve filter clogged with impurity?

Is resistance of the inlet valve connector 
between the 2 to 8

k

?

Check the voltage between each terminals of inlet

Valve is 220 - 240V~.

(Refer to 7-2 TEST MODE)

Is water supplied?

Are replaceptacles correctly connected to the
terminals of inlet valve?

Is detergent put in the correct compartment of
the drawer?

Is the detergent caked or hardened?

Open the tap.

Clean the filter.

Replace the inlet valve.

Replace PWB assembly

Refer to solution

NO INLET

Check the wiring on the

dispenser.

Put the detergent in the

correct position 

: Detergent 

Clean the drawer.

MAIN

WASH

SOFTENER

PRE -

WASH

Wiring diagram

option (HOT)

MAX

max

Fix the bolt tightly.

Replace the V-belt
(4400FR3116A)

Replace the motor.

Refer to

NO WATER SUPPLY

Check the wiring on the 
dispenser.

Put it in the correct
compartment.

Clean the cap and
drawer.

Is the pulley bolt loosened?

Is the belt worn?

Is there friction noise from the motor?

Is water supplied?

Are receptacles correctly connected to the terminals
of inlet valve?

Is softener put in the correct compartment of

drawer?

Is the softener cap clogged?

PWB ASSEMBLY

PWB ASSEMBLY

1

2

Replace the sensor 

(pressure).

Replace the sensor 

(pressure).

Repair drain hose

Remove foreign material.

Reconnect or repair the
connector

Replace the pump
assembly

Replace the PWB  

When pressing [Option] and [Spin] at the same time
after draining, is  the water level frequency 252 or
more?  
When pressing  [Option], [Spin] buttons at the
same time while wash, is the water level
frequency between 220 - 240?

Replace the PWB assembly.

Is the drain hose twisted or frozen?

Is the impeller of the drain pump clogged?

Is the connector disconnected, disassembled?

Is the coil of drain pump cut-off?

(resistance of coil is 90~160 )

When checking voltage between connectors

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

as the figure?