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Troubleshooting
SiEN12-710A
110
Service Diagnosis
4.3 Freeze-up Protection Control or High Pressure Control
Remote Control
Display
A5
Method of
Malfunction
Detection
"
High pressure control (heat pump model only)
During heating operations, the temperature detected by the indoor heat exchanger
thermistor is used for the high pressure control (stop, outdoor fan stop, etc.)
"
The freeze-up protection control (operation halt) is activated during cooling operation
according to the temperature detected by the indoor unit heat exchanger thermistor.
Malfunction
Decision
Conditions
"
High pressure control
During heating operations, the temperature detected by the indoor heat exchanger
thermistor is above 65°C
"
Freeze-up protection
When the indoor unit heat exchanger temperature is below 0°C during cooling operation.
Supposed
Causes
"
Operation halt due to clogged air filter of the indoor unit.
"
Operation halt due to dust accumulation on the indoor unit heat exchanger.
"
Operation halt due to short-circuit.
"
Detection error due to faulty indoor unit heat exchanger thermistor.
"
Detection error due to faulty indoor unit PCB.
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 ...