LG LFXS26973 Series Service Manual page 86

What to do per LED Blinking and Trip protection Logic
4. Over Voltage Trip and LED Blinking 4 times (Over Voltage Trip)
Blink Blink Blink Blink OFF Blink Blink Blink Blink OFF
 Purpose : Protection the PCB by Over Voltage.
 Cause : DC Link Over Voltage Input(over 450V )
DC
 Logic : After the Comp. Off every 90 seconds restart Comp.
Test Mode
LED 4 Blinks
LED 4 Blinks
About 5min
Reset Replace PCB
1 Input
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