Operation Control (Cu-3E18Lbe And Cu-4E23Lbe); Cooling Operation - Panasonic CU-2E15LBE Service Manual

12 Operation Control (CU-3E18LBE and CU-4E23LBE)

12.1. Cooling Operation

12.1.1. Outdoor fan control
• When cooling operation is enabled, based on outdoor ambient temperature, fan motor control will be adjusted according to figure
below:
12.1.2. 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.
- Outdoor ambient temperature is less than 15°C
• Control contents:
- 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:
- When either one of the start conditions are not complied.
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