Outdoor Air Temperature Control - Panasonic CS-HE9DKE Service Manual

CS-HE9DKE CU-HE9DKE / CS-HE12DKE CU-HE12DKE
9.15.8. Four-way valve Operation Detection Control (Switching Abnormality between
Cooling and Heating)
In Cooling operation
1. When indoor heat exchanger temperature exceeds 45°C in 4 minutes after compressor starts, compressor will be stopped.
2. If the above excess occurs 4 times per 30 minutes, timer lamp is to be blinking. ("F11" is to be confirmed.)
In Heating operation
1. When indoor heat exchanger temperature is below 0°C in 4 minutes after compressor starts, compressor will be stopped.
2. If the above excess occurs 4 times per 30 minutes, timer lamp is to be blinking. ("F11" is to be confirmed.)
9.15.9. Anti-Freezing Control (Cooling and Dry operations)
Limit of Cooling power
1. When temperature of indoor heat exchanger is below 5°C, operating frequency will be decreased.
2. When temperature of indoor heat exchanger exceeds 7°C, operating frequency will be increased. (But, up to programmed
frequency.)
3. When temperature of indoor heat exchanger is below 0°C continuously for 6 minutes, compressor will be stopped.
4. Timer lamp is not blinking. ("F99" is memorized, then.)
Limit of Indoor fan speed
When temperature of indoor heat exchanger is below 6°C (2°C at Dry) continuously for 6 minutes, indoor fan speed will be
increased by 50 rpm.

9.15.10. Outdoor Air Temperature Control

In Cooling and Dry operations
1. When outdoor air temperature is below 25°C, the maximum power will be limited up to about 80-100% of the rated power.
2. When outdoor air temperature is below 18°C, the maximum power will be limited up to about 50-100% of the rated power.
3. When outdoor air temperature is below 11°C, the maximum power will be limited up to about 26-81% of the rated power.
9.15.11. Indoor Intake Air Temperature Control (Heating operation)
1. When indoor air temperature is 35°C or more, the maximum power will be limited up to the rated power.
2. When fan speed is set at "Lo" and intake air temperature is below 21°C, the maximum power will be limited up to the rated
power.
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