LG LLMXS3006S Service Manual page 104

11-2 Check B
1. FCT0 Trip and LED Blinking 1 time (FCT0 Fault)
Blink OFF Blink OFF
→ Purpose : To detect the compressor voltage and current sensing error.
→ Restart every 30 seconds after compressor off.
LED 1
Reset
Blinks
2. Stroke Trip and LED Blinking 2 times (Stroke Trip)
Blink Blink OFF Blink Blink OFF
→ Purpose : Protection piston crash by abnormally large Stroke.
→ Case 1. Do not operate Comp.
: harness connection failure between the PCB, Comp, Capacitor.
→ Case 2. Do operate Comp. intermittently
: Condenser Fan or Freezer Fan Error.
System Error like water-clogging, capillary-clogging, refrigerant-leakage
→ Logic: After the Comp. Off every 1 minute restart Comp.
Check
LED Blinking 2 times
the Protection Logic
Check the
leakage and cycle
Recheck
Test
Mode
About 5min
1 Input
Check Stroke or
(Stroke Trip)
Y
Do not operate
Harness connection
Comp.?
N
Compressor is operate
intermittently
Y
N
Stroke Trip
occur?
LED 1
Blinks
N
Repair Harness
Y
Check
Y
Reset
-104-
Replace PCB
N
Replace
Check Comp.
Compressor
Y
Copyright © 2021-2022 LG Electronics Inc.
All rights reserved. Only training and service
purposes.