NR-BX418/NR-BX468/NR-BX41B/NR-BX46B
5. SELF PROTECTING FUNCTION
5.1 Protection for IC
1
2
3
4
5
6
8
9
7
NO
NO
YES
YES
YES
YES
NO
Does IC receive IPM protect signal?
• 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.
IC orders to stop compressor for 10 min.
Does system protection cycle for 333 times?
IC order to stop compressor completely.
After 10 min., does PCB check if IPM protect
signal is normal?
IC cancels to stop compressor.signal is
Normal operating?
After restarting, does “Stop compressor”
occure 10 times within 2 min?
IC cancels to stop compressor.
Normal operating?
After 1 hour.
SYSTEM PROTECT CONTROL CYCLE
1st time
SYSTEM PROTECT CONTROL CYCLE
333rd time
STOP COMPRESSOR
OPERATE each 7min X 10 times COMPRESSOR 1hour STOP OPERATE each 7min X 10 times
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