Operation Control; Cooling Operation - Panasonic CU-2E18NBU Service Manual

11. Operation Control

11.1 Cooling Operation

11.1.1 Outdoor fan control
When cooling operation is enabled, based on outdoor ambient temperature, fan motor control will be adjusted
according to figure below:
11.1.2 Annual Cooling control
This control is to enable cooling operation when outdoor ambient temperature is low.
Control start conditions:
Cooling operation is activated with compressor ON.
o
Outdoor ambient temperature is less than 59°F
o
Control contents:
When the above conditions are fulfilled, based on outdoor pipe temperature, the outdoor fan motor will
o
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:
When either one of the start conditions are not complied.
o
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