LG LFXS26973 Series Service Manual page 85

What to do per LED Blinking and Trip protection Logic
3. No Connection Trip And LED Blinking 3 times (No Connection Trip)
Blink Blink Blink OFF
 Purpose : Prevention Over-Voltage and Over-Current by detecting connection error check.
 Cause : Harness connection failure between PCB, Comp, Capacitor.
 Logic : After the Comp. Off every 40 seconds restart Comp.
Check
the Protection Logic
Replace PCB
Recheck
Blink Blink Blink OFF
Comp. insulation breakdown.
Check
No Connect or
LED blinking 3 times
(No Connect Trip)
Y
Do not operate
Comp.?
N
Y
N
No Connect Trip
occur?
N
Repair Harness
Y
Check
Harness connection
Reset
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N
Check Comp.
Compressor
Y
Replace