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Service Diagnosis
20
A5
Description
Anti-freeze protection or High Pressure Control
Supposed Cause
1. Indoor air
fi
lter, heat exchanger block due to dust accumulation.
2. Indoor air short circuit.
3. Indoor coil thermistor faulty.
4. Indoor PCB faulty.
5. Fan blower dirty.
Troubleshooting
Any air short
circuit?
Does it confirm
to the thermistor
accuracy table?
Yes
No
Check indoor air flow.
Check intake air filter.
Check fan blower condition.
Change indoor thermistor.
Check the dust
accumulate indoor coil.
No
Yes
Change indoor PCB.
Provide sufficient air passage.
Is it very dirty?
Yes
No
Clean the air filter.
Check indoor coil
thermistor resistance.
Is it very dirty?
Yes
# Refer to thermistor resistance table.
No
Clean fan blower.
Is it very dirty?
Yes
No
Clean the indoor coil.
Summary of Contents for SKYAIR
Page 1: ...R410A SERVICE MANUAL SKYAIR Inverter Single Split SM 5CKY CCY CEY EU A1...
Page 3: ...ii...
Page 29: ...Wiring Diagram 26 Wiring Diagram Model ABQ71 100 125 140AV1 Model ACQ71 100 125AV1...
Page 30: ...Wiring Diagram 27 Model AHQ71AV1 Model AHQ100 125AV1...
Page 31: ...Wiring Diagram 28 Model AHQ140AV1 Model ABQ140BV1...
Page 32: ...Wiring Diagram 29 Model ACQ100 125BV1 Model ABQ71 100CV1...
Page 33: ...Wiring Diagram 30 Model ABQ125 140CV1 Model ACQ71 100 125CV1...
Page 34: ...Wiring Diagram 31 Model AHQ71 100 125CV1 Model AHQ140CV1...