DOWNLOAD LG DIRECT / DRIVE / 70140 Service Manual ↓ Size: 3.25 MB | Pages: 36 in PDF or view online for FREE

NO

YES

NO

NO

YES

NO

YES

YES

NO

NO

YES

YES

YES

NO

NO

NO

YES

Wiring diagram

Option (Hot)

Option (Hot)

MAX

max

Is water supply shut-off?

Is the tap opened?

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

k

?

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 caked or 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

Wiring diagram

Option (Hot)

MAX

max

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?

220-240V

NO

YES

YES

YES

YES

NO

NO

NO

NO

YES

YES

NO

MAIN PWB ASSEMBLY

MAIN PWB ASSEMBLY

2

1

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.

When pressing Opt. 2 and Time Delay at the same
time after draining, is  the water level frequency 252
or more?   When pressing Opt. 2, Time Delay
buttons at the same time while wash, is the water
level frequency between 
230 - 243 ?

Checking voltage between two pins 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 90~160

)

When checking voltage between connectors

(

, 

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

as the figure?

YES

YES

YES

YES

YES

NO

NO

NO

NO

NO

Hose

Connector

(Gray)

Connector

Connector

Hose

2

1

Is the impeller of the drain pump clogged?

Are the Hose Connector and/or Hose clogged?

Is the connector disconnected, disassembled?

Is the coil of the right side of drain pump open
or short circuited? (Coil R is 18-30Ω)

When checking voltage between the 
connectors during spin, is the voltage 
220-240V~ as the figure?

Remove foreign material.

Remove foreign material.

Reconnect or repair 
the connector.

Replace PUMP MOTOR
ASSEMBLY.

Replace the MAIN PWB
ASSEMBLY.