LG LSC27926, Service Manual, Page: 17 / 101

2-12. Ringing of compulsory operation, compulsory frost removal buzzer
1. If pressing the test button in the main PCB, “Phi ~” sound rings.
2. In selecting compulsory operation, alarm sound is repeated and completed in the cycle of On for 0.2 second and Off for
1.8 second three times.
3. In selecting compulsory frost removal, alarm sound is repeated and completed in the cycle of On for 0.2 second , Off for
0.2 second, On for 0.2 second and Off for 1.4 second three times.
2-13. Frost removal function
1. Frost removal is performed whenever total operation time of compressor becomes 7 ~ 7.5 hour.
2. In providing initial power (or returning power failure), frost removal starts whenever total operation time of compressor
becomes 4 ~ 4.5 hour.
3. Frost removal is completed if temperature of a frost removal sensor becomes more than 5°C after starting frost removal.
Poor frost removal is not displaced if it does not arrive at 5°C even if two hours have passed after starting frost removal.
4. No removal is done if frost removal sensor becomes poor (snapping or short-circuit).
2-14. Refrigerator room lamp automatically off
• Refrigerator room lamp turn on and off by refrigerator door switch.
• If refrigerator room lamp continuously turns on more than 7 minutes, the refrigerator room lamp turns off automatically by
compulsion.
MICOM FUNCTION
- 17 -