LG CW2079CW Service Manual ▷ View online
20
ERROR SYMPTOM
CAUSE
• The connector (3-pin, male, white) in the MOTOR
HARNESS is not connected to the connector
(3-pin, female, white) of STATOR ASSEMBLY.
(3-pin, female, white) of STATOR ASSEMBLY.
• The electric contact between the connectors
(3-pin, male, white) in the MOTOR HARNESS
and 4-pin, female, white connector in the MAIN PWB
ASSEMBLY is bad or unstable.
and 4-pin, female, white connector in the MAIN PWB
ASSEMBLY is bad or unstable.
• The MOTOR HARNESS between the STATOR
ASSEMBLY and MAIN PWB ASSEMBLY is cut (open
circuit).
circuit).
• The hall sensor is out of order/defective.
7
LOCKED
MOTOR
ERROR
• Loose Ball Sensor Connector.
• Ball Sensor is out of order.
• Ball Sensor is out of order.
※ Displayed only when the START button is first pressed
in the QC Test Mode.
8
BALL SENSOR
ERROR
• Disconnection of Card Reader Wire.
10
CARD
READER
ERRER
• EEPROM is out of order.
※ Displayed only when the START button is first pressed
in the QC Test Mode.
9
EEPROM
ERROR
21
9
. DIAGNOSIS AND TROUBLESHOOTING
1. Be careful of electric shock if disconnecting parts while troubleshooting.
2. First, check the connection of each electrical terminal with the wiring diagram.
3. If you replace the MAIN PWB ASSEMBLY, reinsert the connectors correctly.
NO
YES
YES
YES
YES
NO
NO
NO
NO
YES
PWB ASSEMBLE, DISPLAY
5
5
5
5
1
3
4
Is the supplied voltage 120 V AC?
Is the voltage between the FILTER ASSEMBLY
connectors
connectors
and 120 V AC?
Is the LED lamp
on?
Are the connectors
on the PWB loose?
Is wire of the DISPLAY PWB ASSEMBLY
broken?
broken?
Replace DISPLAY PWB ASSEMBLY
or repair wire.
or repair wire.
Check the fuse or reset
the circuit breaker.
the circuit breaker.
Replace the FILTER
ASSEMBLY (CIRC).
ASSEMBLY (CIRC).
Replace MAIN PWB
ASSEMBLY.
ASSEMBLY.
Reconnect.
Replace the CABLE
(HARNESS)
(HARNESS)
NO POWER
WARNING
!
22
NO
YES
YES
NO
YES
NO
YES
NO
NO
YES
NO
Main washer
Safterner
Is the tap opened?
Is the tap frozen?
Is the water supply shut-off?
Is filter in the inlet valve clogged with
foreign material?
foreign material?
Open the tap.
After separating the hose
from the washing machine
soak in hot water for 10
minutes.
from the washing machine
soak in hot water for 10
minutes.
Is resistance between each terminal of the INLET
VALVE ASSEMBLY 0.8-1.2
VALVE ASSEMBLY 0.8-1.2
kΩ
?
Verify the voltage of the inlet valve connector is
120 V AC.
Refer to page 18, QC TEST MODE.
Replace the INLET
VALVE ASSEMBLY.
VALVE ASSEMBLY.
※Make sure the tap is closed before
replacing.
Check electrical connection.
Replace the MAIN PWB
ASSEMBLY.
Replace the MAIN PWB
ASSEMBLY.
IE ERROR (NO WATER SUPPLY)
Clean the filter of
INLET VALVE ASSEMBLY
INLET VALVE ASSEMBLY
23
NO
YES
YES
NO
NO
NO
NO
YES
YES
NO
1
2
3
4
(Yellow 4pin)
Repair the DRAIN HOSE
ASSEMBLY.
ASSEMBLY.
Reconnect or repair the
connector
connector
Replace the DRAIN
PUMP ASSEMBLY.
PUMP ASSEMBLY.
Replace the MAIN PWB
ASSEMBLY.
ASSEMBLY.
Is the drain hose twisted or frozen?
Is the connector disconnected or disassembled?
Is the coil of the drain pump too high or low?
(resistance of the coil is 10-20 Ω)
(resistance of the coil is 10-20 Ω)
When checking voltage between connectors
(
and ) during drain, is the voltage 120 V AC
as in the figure?
OE ERROR (DRAIN TROUBLE)
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