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:
To improve the judgment accuracy, indoor room temperature sampling starts when any indoor unit has stopped capability supplied (heating
To prevent discharge temperature drop at indoor units which is ON when sampling the room temperature of heating
However, if indoor room temperature is high compare to remote control setting temperature, sampling of corresponding indoor unit will be cancelled.
11.2.2Powerful Operation 1
During cooling operation, this control is to concentrate outdoor unit capability to the powerful operation enabled indoor unit by temporary stop the capability supply to low load demand indoor units.
Operation start condition:
o Powerful operation ON for targeted indoor unit
Operation content:
o If other indoor units (where Powerful operation are OFF) achieve setting temperature continuously for
1 minute after received powerful command from indoor unit, then capability supply to other indoor units are stopped for minimum 3 minutes.
Capability supply stop period follows powerful operation period.
Operation stops when comply either one of the following conditions:
o When other indoor units (where Powerful operation are OFF) is lower than setting temperature. o When the powerful operation is OFF for all indoor units.
o When Quiet operation received from 1 indoor unit. o When protection control starts.
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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