Compressor Troubleshooting; Pcb Check (Simplify); Test Mode - LG LMXS28626 Series Service Manual

12. Compressor Troubleshooting

PCB Check (Simplify)

A-inverter
Power Off
Disconnect
Test Button

Test Mode

Ref.
TEST1 Forced Starting
Troubleshooting
Recheck
Reset
Y
LED
Not
Blink?
Cooling
N
Check C
Con201
Power On
Comp
FLB075(A-Inverter)
TDC (Full Stroke)
LED blink 1 LED blink record
LED blink 7
LED blink record
LED blink 5 LED blink record
LED blink2 LED blink record
LED blink6 LED blink record
Comp. N
Work?
Y
Y
N
Refrigerant
r i a p e R y v a e
leak ?
TEST 1 Mode
Time>30sec
& V≒200
N
Replace Driver PCB
Display & sound
Display ON, Buzz 1 time
Reset LED blink 1
Comp.
Check?
Reset LED blink 7
Comp.
Reset LED blink 5
Work?
Y
Y
Leakage?
Heavy Repair
Comp.
Reset LED blink2
Work?
Y
Y
Refrigerant
Heavy Repair
leak?
Comp.
Reset LED blink6
Work?
Y
Y
Heavy Repair Leakage?
IPM output
N
> Replace Driver PCB
80V-20%
Y
N
Comp.
Check?
H k c e h c e R
- 80-
Protection Logic
Y
PCB OK
Check Voltage about 200V
past 30second after turn on
Refer
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