Heating Operation Prohibition - Daikin Aurora Series Service Manual

SiUS341802E
8.3

Heating Operation Prohibition

When outdoor air temperature is too high, outdoor unit cannot operate in heating mode because:
Low pressure sensor can give pressure value above upper limit of sensor: error JC.
Mechanical internal load on compressor increases.
Low compression ratio can result in insufficient compressor internal oil lubrication.
Heating is disabled when outdoor air temperature is above 26°C (78.8°F).
Forced thermostat-OFF on indoor units.
Outdoor unit fan operates at "step 1".
Heating operation is enabled when outdoor air temperature drops below 24°C (75.2°F).
Functions and Control
Other Control
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