Self Protecting Function - Panasonic NR-BY55BPS Service Manual

5. SELF PROTECTING FUNCTION

5.1 Protection for IC
1
Does IC receive IPM protect signal?
2 IC orders to stop compressor for 10 min.
After 10 min., does PCB check if IPM protect
3
signal is normal?
IC cancels to stop compressor.signal is
4
Normal operating?
After restarting, does "Stop compressor"
5
occure 10 times within 2 min?
IC cancels to stop compressor.
6
Normal operating?
Does system protection cycle for 333 times?
8
IC order to stop compressor completely.
9
SYSTEM PROTECT CONTROL CYCLE
1st time
OPERATE each 7min X 10 times COMPRESSOR 1hour STOP
NO
YES
NO
YES
YES
NO
YES
SYSTEM PROTECT CONTROL CYCLE
• Normal operating.
• IC continues to stop compressor until 1 hour.
• IC indicates Self Diagnosing sign.
• IC continues to stop compressor until 1 hour.
• IC indicates Self Diagnosing sign.
7
After 1 hour.
333rd time
OPERATE each 7min X 10 times
- 8 -
NR-BY558/NR-BY55B/NR-BY608
STOP COMPRESSOR