11.2 Heating Operation

11.2.1Outdoor fan control

When heating operation is enabled, based on outdoor ambient temperature, fan motor control will be adjusted according to figure below for Heating overload control:

11.2.2Heating Room Temp Sampling Control

To improve the judgment accuracy, indoor room temperature sampling starts when any indoor unit has stopped capability supplied (heating thermo-off) during heating operation with compressor ON, outdoor unit will send signal to all thermo-off indoor units to ON fan motor and get room temperature sample.

To prevent discharge temperature drop at indoor units which is ON when sampling the room temperature of heating thermo-off units, the compressor frequency is increased accordingly.

However, if indoor room temperature is much higher compare to remote control setting temperature, before thermo-off, sampling of corresponding indoor unit will be cancelled.

11.2.3Powerful Operation 2

During cooling / heating operation, this control is to provide fast cooling / heating operation compare to normal operation.

Operation start if all condition below are complied: o Powerful operation ON for indoor unit.

o Not under Annual Cooling control.

Operation content:

o Outdoor fan speed will adjust automatically.

o Compressor frequency will adjust automatically.

Operation stop when comply either one of the follow conditions: o When the powerful operation is OFF for all indoor units.

o When annual cooling control activated.

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Panasonic CU-5E36QBU service manual Heating Operation, Heating Room Temp Sampling Control, Powerful Operation