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14.1.5 High Pressure Sensor Control
Purpose:
- To protect the system operation.
Detection period:
- After compressor on for 1 minute.
Detection conditions:
- When abnormal high voltage detection, 5 V or when open circuit detection 0V for 5 seconds continuously.
After detection:
- When abnormality is detected 4 times within 120 minutes, unit stop operation.
- OFF/ON control panel LED will blink (H64 error occurs).
14.1.6 Outside Temperature Current Control
14.1.7 Crank Case Heater Control
Purpose:
- For compressor protection during low outdoor ambient operation (during heating low temperature operation).
Control content:
a. Trigger heater START condition
o
When the outdoor air temperature is below than 5°C, and discharge temperature is 11°C or below.
b. Resetting heater STOP condition
1.
When the outdoor air temperature exceeds entry condition (2°C)
2.
When the discharge temperature exceeds entry condition (5°C)
Compressor stop
Outdoor temperature
23°C
14°C
-20°C
21°C
-25°C
12°C
Max.
current
value is
regulated
