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8-4. TROUBLESHOOTING WITH ERROR

Is                 displayed?

When you press both
SPIN SPEED button and
SOIL LEVEL button
simultaneously,
is the water level frequency
below 24.6 kHz?

(Refer to 7-3.)

Is filter inlet valve clogged
with foreign material?

Is the connector connected to
inlet valve assembly
disconnected or
disassembled?

Is resistance between
each terminal of INLET
VALVE ASSEMBLY
0.8-1.2 k

Ω?

(Refer to 9-5 inlet valve
assembly)

Clean or
replace the filter.

Check the AIR
CHAMBER
and the tube
(clogged).

Reconnect or
repair
the connector.

Replace the
INLET VALVE
ASSEMBLY.

Is the voltage of the inlet
valve connector 120 V AC?
(Check the all terminal of
INLET VALVE ASSEMBLY
while the power is on.)

Replace the
INLET VALVE
ASSEMBLY.

Is the connector connected to
MAIN PWB assembly
disconnected or dis-
assembled?(NA, WH, BL)

Reconnect or
repair
the connector.

Is Electrical connection
correct?

(Refer to 9-5 wiring diagram)

Replace the
MAIN HARNESS.

After checking connector,
is the water level frequency
below 24.6 kHz?

(Refer to 7-3)

Replace the MAIN PWB
ASSEMBLY.

[Note] Environmental safety check list
1) No water tap leakage
2) No water tap freeze
3) No entanglement of water supply hose
4) No water shortage
5) No shrinkage on water supply hose due to

a possible misuse of hot and cold water

6) No water supply hose leakage

Check the
PRESSURE
SWITCH.

Is                 displayed?

Is the connector connected
to pump motor assembly
disconnected or
disassembled?

Reconnect or
repair
the connector.

When you press both
SPIN SPEED button and
SOIL LEVEL button
simultaneously, is the
water level frequency
below 26.0 kHz?

(Refer to 7-3)

Check the AIR
CHAMBER,
the tube
(clogged),
and press
switch

Is the coil of the drain
pump too high or low?
(resistance of the coil
is 10-20

Ω)

(Refer to 9-4 Pump motor
assembly)

Replace the
DRAIN 
PUMP
ASSEMBLY.

Is the voltage between
connectors out of range?
(BL1 pin1, pin3)
- After remove Terminal
Position Assurance (TPA)
of connector, check as
follows.
- And if you finish to measure
the valve, You should put
TPA as original form.

- Pump running : 120V±5%
- Stopped Motor/Pump : 0~1V Method
1. Press the Power button, while the SPIN SPEED

button and SOIL LEVEL button is pressed
simultaneously.

2. Press Start/Pause button.

: 1 time  

Pump slow-speed running

: 2 times  

Pump mid-speed running

: 3 times  

Pump high-speed running

: 4 times  

Stop the Motor/Pump

[Note] Environmental check list
1) The drainage hose must not stay in a lower position.
2) The drainage hose must not be bent or

clogged in any way due to the surrounding
physical configuration.

3) The drainage hose must not get frozen at all times.
4) The drainage pump must not have any improper

substance or material inside that may cause
a machine breakdown.

Replace the
MAIN PWB
ASSEMBLY.

Is                 displayed?

Check the connectors below.
Is the connector disconnected
or disassembled?
(motor hall sensor connector,
motor drive connector)
- part of main PWB

Reconnect
the connector.
(connector /
wire / motor)

Replace
the ROTOR

Is rotor magnet cracked?

Magnet

Replace
the STATOR

Is the resistance values
in the range of 5 to 15 

Ω?

(U-V, V-W, W-V
:U=1, V=2, W=3)
- After pull out the RD4

connector, check the
terminal of the connector
in wire. (Red 3P, male)

Replace
the Hall
sensor

Is hall sensor out of
order? 

(Refer to 9-3

Stator assembly/Hall
sensor.)

Replace the
MAIN PWB
ASSEMBLY

Check the IPM in the
controller.

Is                 displayed?

Is the connector connected
to door switch or main PWB
disconnected?

Reconnect or
repair
the connector

Is there clicking sound once
or twice when the
START/PAUSE button is
pressed to start the cycle?

Replace the
PCB
ASSEMBLY.

Is DOOR SWITCH
ASSEMBLY broken?

Replace the
DOOR
SWITCH
ASSEMBLY.

Does the spring of Latch
Hook actuate?

Replace
Door
Assembly

[Note] Environmental check list
1) The machine must operate with all the doors

completely closed and locked.

2) The washing area must operate with a water

temperature not higher than 45 Celsius and
must not have more amount of supplied water
than it should.