DOWNLOAD LG WM2550HVCA Service Manual ↓ Size: 41.93 MB | Pages: 60 in PDF or view online for FREE

Model
WM2550HVCA
Pages
60
Size
41.93 MB
Type
PDF
Document
Service Manual
Brand
Device
Washing Machine
File
wm2550hvca.pdf
Date

LG WM2550HVCA Service Manual ▷ View online

24
UNBALANCE 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
PRESSURE SENSOR ERROR
Yes
Is the connector connected
to pressure sensor
disconnected or
disassembled?
Reconnect or
repair
the connector.
No
No
Yes
Is the resistance of the
pressure sensor out of
range?
(pin 1~ pin 3)
(21~23
Ω ±10%)
Replace the
pressure
switch.
No
Yes
Is the AIR CHAMBER and
the tube clogged?
Replace the MAIN PWB
assembly.
Fix the air
chamber
and remove
the foreign
material.
Yes
Is
PE ERROR
displayed?
25
8-5. TROUBLESHOOTING ELSE
NO POWER
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 PWB ASSEMBLY, reinsert the connectors correctly.
CAUTION
Check the
fuse or reset
the circuit
breaker.
Yes
No
Is the current rating of
multi-outlet power strip
enough?
(Avoid connecting several
electric devices.)
Is the supplied voltage
120V AC?(+10%, -15%)
Alternate with
explanation.
Yes
Yes
No
Is the connector connected
to PCB/Noise filter
disconnected or
disassembled?
Reconnect
or repair
the connector.
No
Replace the
MAIN PWB
ASSEMBLY.
Yes
No
Is LED on while the power
is on?
Replace the
DISPLAY
PWB
ASSEMBLY.
Display PWB
Connecting connector
MAIN PWB~ Display PWB
No
Is five pin wire of
display PWB broken?
26
BUTTON DOESN’T WORK
Is the connector connected
to Main PWB / Display
PWB disconnected or
disassembled?
Reconnect or
Repair
the connector.
Yes
Is the button of panel stuck?
Repair the
button.
Yes
No
27
Tighten
Tighten
Have all the transit bolts and base packing
been removed?
Remove the transit bolts
and Base packing.
Move the washer or
reinforce the floor.
Is the washer installed on a solidly constructed
floor?
Check if the washer is perfectly level as follows:
Check the leveling of the washer with a Level
and check that the washer is stable.
Put an unbalance part (rubber) inside of drum
and start QC test mode and run in high spin
(Refer to section 7-2). 
When the machine is spinning in high speed,
verify that it is stable.
VIBRATION & NOISE IN SPIN
If it is not stable, adjust feet accordingly. After
the washer is level, tighten the lock nuts up
against of the base of the washer. All lock nuts
must be tightened.
If you do not have the unbalance part, put 4.5 to
6.5 lbs (2 to 3 kg) of clothing. Once loaded,
press power, Rinse+Spin and the start/pause
button in sequence.
When the machine is spinning in high speed,
verify that it is stable. 
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