Compressor Troubleshooting; Pcb Check; Test Mode - LG LFCS22520 series Service Manual
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Also See for LFCS22520 series:
- Owner's manual (92 pages) ,
- Owner's manual (50 pages) ,
- Owner's manual (50 pages)
Table of Contents
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11. COMPRESSOR TROUBLESHOOTING
PCB Check (Simplify)
A-inverter
Power Off
Test Button
Test Mode
Ref.
TEST1
Forced Starting
Troubleshooting
Recheck
Reset
LED
Not
Blink?
Cooling
N
Check C
Con201
Power On
Disconnect
Comp
FC75(A-Inverter)
TDC (Full Stroke)
LED blink 1
Reset
LED blink 7
Reset
LED blink 5
Reset
Y
LED blink2
Reset
LED blink6
Reset
Comp.
Work?
Y
Refrigerant
Heavy Repair
leak ?
TEST 1 Mode
Time>30sec
& V 200
≒
N
Replace Driver PCB
Display & sound
Display ON, Buzz 1 time
LED blink 1
Comp.
Check?
LED blink 7
Comp.
LED blink 5
Work?
Y
Y
Leakage?
Heavy Repair
Comp.
LED blink2
Work?
Y
Y
Refrigerant
Heavy Repair
leak?
Comp.
LED blink6
Work?
Y
Y
Heavy Repair
Leakage?
IPM output
N
>
80V-20%
Y
Y
N
Recheck
40
Protection Logic
Y
PCB OK
Check Voltage about 200V
past 30second after turn on
Replace Driver PCB
Y
Replace Driver PCB
N
N
Comp.
N
Replace Comp.
Check?
N
Recheck
N
Harness
Y
Comp.
Check?
Check?
N
Fix Harness
N
Recheck
N
N
Comp.
Check?
N
Recheck
N
Replace Driver PCB
N
Comp.
Check?
Refer
N
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Table of Contents
Troubleshooting
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Do you have a question about the LFCS22520 series and is the answer not in the manual?
Questions and answers
I am getting this error message FF E It is not cooling properly
The FF E error message on the LG LFCS22520 series refrigerator indicates a freezer fan motor error. It occurs when the feedback signal isn’t detected for over 65 seconds, which may be caused by a poor motor, wiring issues, or obstructions.
To fix the cooling issue:
1. Check for Obstructions – Ensure that no ice buildup or foreign objects are blocking the freezer fan.
2. Inspect Wiring – Look for loose, damaged, or disconnected wires leading to the fan motor.
3. Test the Fan Motor – If the fan is not running, it may need to be replaced.
4. Reset the Refrigerator – Unplug the unit for a few minutes, then plug it back in to see if the error clears.
5. Check for Poor Contact – Ensure all fan connections are secure and properly seated.
If the issue persists after these steps, consider contacting a technician for further diagnosis.
This answer is automatically generated