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SiEN12-710A
Troubleshooting
Service Diagnosis
139
4.21 Insufficient Gas
Remote Control
Display
U0
Method of
Malfunction
Detection
Gas shortage detection I :
A gas shortage is detected by checking the power consumption value and the compressor
running frequency.
Malfunction
Decision
Conditions
Gas shortage detection I :
Power consumption < 4578 / 256 (W/Hz) × Compressor running frequency – 638 (W)
However, when the status of running frequency > 48 (Hz) is kept on for a certain time.
If a gas shortage error takes place 4 times successively, the system will be shut down. The error
counter will reset itself if this or any other error does not occur during the following 60-minute
compressor running time (total time).
Supposed
Causes
"
Refrigerant shortage (refrigerant leakage)
"
Poor compression performance of compressor
"
Stop valve closed
"
Electronic expansion valve defective
Summary of Contents for 2MKS40FV1B
Page 11: ...Introduction SiEN12 710A x ...
Page 12: ...SiEN12 710A List of Functions 1 Part 1 List of Functions 1 Cooling Only 2 2 Heat Pump 4 ...
Page 17: ...Heat Pump SiEN12 710A 6 List of Functions ...
Page 25: ...Heat Pump SiEN12 710A 14 Specifications ...
Page 111: ...Instruction SiEN12 710A 100 Operation Manual ...
Page 199: ...Wiring Diagrams SiEN12 710A 188 Appendix ...
Page 203: ...SiEN12 710A iv Index ...