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Troubleshooting
SiEN12-710A
130
Service Diagnosis
4.16 DC Voltage / DC Current Sensor Abnormality
Remote Control
Display
H8
Method of
Malfunction
Detection
DC voltage or DC current sensor system fault is identified based on the compressor operation
frequency and the input current detected by the product of DC current and DC voltage.
Malfunction
Decision
Conditions
When the compressor operation frequency is more than 52 Hz
and when the DC current is less than 0.3 A or DC voltage is less than 50V.
"
If this error repeats 4 times, 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
"
Power transistor defective
"
Internal wiring broken or in poor contact
"
Reactor defective
"
Outdoor unit PCB defective
"
Refrigerant shortage
Troubleshooting
Replace the outdoor unit PCB.
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
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 ...