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Is LE displayed?

Reconnect
the connector
(connector /
wire / motor )

Check the connectors below. 
Is the connector  disconnected 
or disassembled? 

(motor hall sensor connector, 

motor drive connector)
- Part of main PCB

Is rotor magnet cracked?

Is hall sensor out of order ? 

Check the IPM in the
controller. Is IPM short?

Is the resistance values
in the range of 5 to15 

Ω?

(U-V, V-W, W-V
:U=1, V=2, W=3)
- After pull out the YL3

connector, check the terminal
of the connector in wire.

Replace the
ROTOR

Replace the
STATOR

Replace the Hall
sensor

Replace the 
MAIN PCB 
ASSEMBLY

Is UE displayed?

Put laundry evenly
In the DRUM
assembly

Does the laundry lean toward
one side, not evenly put in the
DRUM assembly?

Is the washing machine
installed at an angle?

Does the inlet valve work
when the power is not
applied?

Replace the INLET VALVE
ASSEMBLY

Adjust the height of
washing machine
to be kept
horizontally

If the inlet valve
works
continuously when
the power is
applied, replace
the MAIN PCB
ASSEMBLY

Is FE displayed?

Check the AIR
CHAMBER and the
tube (clogged).

When you enter the service
mode, is the water level
frequency over 21.0 kHz?

Is PE displayed?

Reconnect or
repair the
connector

Is the connector connected to
pressure sensor disconnected
or disassembled? 

Replace the
pressure switch

Is the resistance of the
pressure sensor out of range?
(pin 1~ pin 3)
(21~23 

Ω±10%)

Is the AIR CHAMBER and the
tube clogged?

Fix the air
chamber and
remove the foreign
material 

Replace the MAIN PCB
assembly

1. Be careful of electric shock if disconnecting parts while troubleshooting.
2. First of all, check the connection of each electrical terminal with the wiring diagram.
3. If you replace the main PCB assembly, reinsert the connectors correctly.

Replace the
DISPLAY PCB
ASSEMBLY

Is three pin wire of display
PCB broken?

Replace the  MAIN
PCB ASSEMBLY

Is LED on while the power is
on?

Check the fuse or
reset the circuit
breaker

Is the supplied voltage
120V AC?(+10%, -15%)

Reconnect or
repair the
connector

Is the connector connected to
PCB/Noise filter disconnected
or disassembled? 

Alternate with
explanation

Is the current rating of multi-
outlet power strip enough?
(Avoid connecting several
electric devices)