LG LFX28968SW Service Manual - Page 63

repetiton Piston Lock Trip

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No LED operating condition LED two - time repetiton (Stroke Trip) 1 ● ● on - on - off - on - on - off - on - on - off ● ● repeating LED five - time repetiton (Piston Lock Trip) 2 ● ● on - on - on - on - on - off - on - on - on - on - on - off ● ● repeating Cause Service guideline 1. Please check, Whether PCB Parts defect or Compress or Connector miss connecting (Piston over run) connector of compressor is attached rightly or not. after power off 2. After the first action, You check on normal operation of compressor. 3. If the same symptom arises after the second action, replace PCB Piston constraint 1. After resetting power, check if it is running normal 2. If the same symptom arises after the first action 3. If the same symptom arises after the second action, replace compressor 1. After resetting power, check if it is running LED six - time repetiton (Current Trip) Circuit over normal 2. If the same symptom 3 current error arises after the first action ● ● on - on - on - on - on - on - off - on - on - on - on - on - on - off ● ● repeating Or cycle error 3. If the same symptom arises after the second action, replace compressor 1. After resetting power, 4 LED seven- time repetiton (IPM Fault Trip) ●● on - on - on - on - on - on - on - off - on - on -on - on - on - on- on - off ● ● repeating PCB parts defect (IPM) check if it is running normal 2. If the same symptom arises after the first action, replace PCB LED once repetiton (FCT0 Trip) 5 ** on - off - on - off - on - off - on - off ** repeating 1. After resetting power,check if it is PCB running normal. parts defect 2. If the same symptom (Motor arises after the current & first action Capacitor 3. If the same symptom Voltage) arises after the second action,replace PCB - 63 -

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- 63 -
LED two - time
repetiton (Stroke Trip)
●●
on
-
on
- off -
on
-
on
- off -
on
-
on
- off
●●
repeating
PCB Parts
defect or
Compress
or
Connector
miss
connecting
(Piston
over run)
1. Please check, Whether
connector of
compressor is attached
rightly or not.
after
power off
2. After the first action,
You check on normal
operation of
compressor.
3. If the same symptom
arises after the second
action, replace PCB
Piston
constraint
1. After resetting power,
check if it is running
normal
2. If the same symptom
arises after the first
action
3. If the same symptom
arises after the second
action, replace
compressor
Circuit
over
current
error
Or cycle
error
1. After resetting power,
check if it is running
normal
2. If the same symptom
arises after the first
action
3. If the same symptom
arises after the second
action, replace
compressor
PCB parts
defect
(IPM)
1. After resetting power,
check if it is running
normal
2. If the same symptom
arises after the first
action, replace PCB
1
LED five - time
repetiton (Piston Lock Trip)
●●
on
-
on
-
on
-
on
-
on
- off -
on
-
on
-
on
-
on
-
on
- off
●●
repeating
2
LED six - time
repetiton (Current Trip)
●●
on
-
on
-
on
-
on
-
on
-
on
- off -
on
-
on
-
on
-
on
-
on
-
on
- off
●●
repeating
3
LED seven- time
repetiton (IPM Fault Trip)
●●
on
-
on
-
on
-
on
-
on
-
on
-
on
- off -
on
-
on
-
on
-
on
-
on
-
on
-
on
- off
●●
repeating
4
PCB
parts defect
(Motor
current &
Capacitor
Voltage)
1. After resetting
power,check if it is
running normal.
2. If the same symptom
arises after the
first action
3. If the same symptom
arises after the
second action,replace
PCB
LED once
repetiton (FCT0 Trip)
**
on
- off -
on
- off -
on
- off -
on
- off ** repeating
5
No
LED operating condition
Cause
Service guideline