Control Specification SiBE041525F
39 Functions and Control
3.12 Malfunctions
3.12.1 Sensor Malfunction Detection
Sensor malfunction can be detected in the following thermistors:
1. Outdoor heat exchanger thermistor
2. Discharge pipe thermistor
3. Radiation fin thermistor
4. Outdoor temperature thermistor
3.12.2 Detection of Overcurrent and Overload
Outline An excessive output current is detected and the OL temperature is observed to protect the
compressor.
Detail If the OL (compressor head) temperature exceeds 120 ~130°C (depending on the model),
the system shuts down the compressor.
If the inverter current exceeds 14 ~ 18 A (depending on the model), the system shuts down
the compressor. The upper limit of the current decreases when the outdoor temperature
exceeds a certain level.
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