Compressor Troubleshooting; Pcb Check (Simplify); Test Mode - LG LMXS27626S Service Manual

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11. Compressor Troubleshooting

PCB Check (Simplify)

A-inverter
Power Off
Disconnect

Test Mode

Ref.
TEST1
Forced Starting
Troubleshooting
Recheck
Reset
Y
LED
Not
Blink?
Cooling
N
Check C
Con201
Power On
Comp
FLA075(A-Inverter)
TDC (Full Stroke)
LED blink 1
Reset
LED blink 7
Reset
LED blink 5
Reset
LED blink2
Reset
Heavy Repair
LED blink6
Reset
Comp.
Work?
Y
Y
Refrigerant
r i a
p
e
R
y v
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
N
Comp.
LED blink 5
Work?
Y
Y
Leakage?
Heavy Repair
Comp.
LED blink2
Work?
Y
Y
Refrigerant
leak?
Comp.
LED blink6
Work?
Y
Y
Heavy Repair
Leakage?
IPM output
N
>
80V-20%
Y
N
a
e
H
k c
e
- 79 -
Protection Logic
Y
PCB OK
Check Voltage about 200V
past 30second after turn on
Replace Driver PCB
Y
Replace Driver PCB
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?
h
c
e
R
Refer
N

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