DOWNLOAD LG WD-15439BDA Service Manual ↓ Size: 7.78 MB | Pages: 62 in PDF or view online for FREE

Model
WD-15439BDA
Pages
62
Size
7.78 MB
Type
PDF
Document
Service Manual
Brand
Device
Washing Machine
File
wd-15439bda.pdf
Date
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24
HEATING ERROR
Is                 displayed?
Is the connector connected
to heater disconnected or
disassembled?
Reconnect or
repair
the connector
Yes
Yes
Is Check heater
resistance out of range?
(12~18 
Ω)
(Refer to 9-6 Heater
assembly.)
Replace the
HEATER
ASSEMBLY
Yes
No
No
Is thermistor resistance
out of range?
(about 39.5 k
Ω at 30
°C
)
(Refer to 9-7 thermistor
assembly)
Replace the
THERMISTOR
ASSEMBLY
Yes
No
Check the trans of water
infiltration into thermistor
terminal.
- Does the water infiltrate
thermistor terminal?
[Note]
Chances that the cause occurs from the
main controller are very little.
Sensing part of the circuit (tE) consists of
only resistors and capacitors.
Replace the
THERMISTOR
ASSEMBLY
Yes
Steam generator heater
Wash heater
Is the connector connected to
thermistor disconnected or
disassembled?
Reconnect or
repair
the connector
Yes
No
Steam generator thermistor
Wash thermistor
25
LOCKED MOTOR ERROR
Is                 displayed?
Check the connectors below.
Is the connector disconnected
or disassembled?
(motor hall sensor connector,
motor drive connector)
- part of main PWB
assembly (NA1, RD4)
Reconnect
the connector.
(connector /
wire / motor)
Replace
the ROTOR
Yes
Yes
Motor Drive
Is rotor magnet cracked?
Hall sensor
Motor Drive
Hall Sensor
- part of wire
- part of motor
Motor
Yes
No
Yes
Yes
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)
No
Replace
the Hall
sensor
Is hall sensor out of
order? 
(Refer to 9-3
Stator assembly/Hall
sensor.)
Yes
No
Replace the
MAIN PWB
ASSEMBLY
Check the IPM in the
controller.
No
26
DOOR OPEN ERROR
Is                 displayed?
Yes
Is the connector connected
to door switch or main PWB
disconnected?
Reconnect or
repair
the connector
Yes
No
Is there clicking sound once
or twice when the
START/PAUSE button is
pressed to start the cycle?
Replace the
PCB
ASSEMBLY.
No
Is DOOR SWITCH
ASSEMBLY broken?
Replace the
DOOR
SWITCH
ASSEMBLY.
No
Yes
Does the spring of Latch
Hook actuate?
Replace
Door
Assembly
Yes
No
[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.
27
UNBALANCE ERROR
OVER FLOW ERROR
[Note] Environmental check list
1) Removal of transportation-based fixed bolt.
2) Confirmation on the material to see if it is capable
of handling two different types of blanket materials.
Is                 displayed?
Yes
Does the laundry lean
toward one side, not evenly
put in the DRUM assembly?
Put laundry
evenly
In the DRUM
assembly
Yes
Is the washing machine
installed at an angle?
Adjust the
height of
washing
machine
to be kept
horizontally
Yes
No
Is                 displayed?
Yes
When you press both
WASH/RINSE button and
DELAY WASH button
simultaneously, is the
water level frequency over
21.3kHz? 
(Refer to 7-3)
Check the AIR
CHAMBER
and the tube
(clogged).
No
Does the inlet valve work
when the power is not
applied?
Replace the
INLET VALVE ASSEMBLY
If the inlet
valve work
continuously
when the power
is applied,
Replace the
MAIN PWB
ASSEMBLY
No
Yes
Yes
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