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16. Operation Control (CU-2WZ71YBE5)
16.1 Cooling Operation
16.1.1 Outdoor fan control
When cooling operation is enabled, based on outdoor ambient temperature, fan motor control will be adjusted
according to figure below:
RPM free
RPM controlled
15°C
13°C
Stopped
-12°C
OD temp.
16.1.2 Annual Cooling control
This control is to enable cooling operation when outdoor ambient temperature is low.
Control start conditions:
o
Cooling operation is activated with compressor ON.
o
Outdoor ambient temperature is less than 15°C.
Control contents:
o
When the above conditions are fulfilled, based on outdoor pipe temperature, the outdoor fan motor will
operate according to figure below:
To improve the judgment accuracy during annual cooling control, outdoor ambient temperature sampling for
2 minutes will be activated every 35 minutes under designated fan speed.
Control stop conditions:
o
When either one of the start conditions are not complied.
