DAMA-SM-21-001 Control Specification
Functions and Control 49
3.13 Malfunctions
3.13.1 Sensor Malfunction Detection
Sensor malfunction can be detected in the following thermistors in open or short circuit.
1. Outdoor heat exchanger thermistor
2. Discharge pipe thermistor
3. Radiation fin thermistor
4. Outdoor temperature thermistor
3.13.2 Detection of Overcurrent and Overload
Outline In order to protect the inverter, an excessive output current is detected in wire labelled as No 1
at outdoor terminal block and the OL temperature is observed to protect the compressor.
Details If the inverter current exceeds A A, the system shuts down the compressor.
If the OL (compressor head) temperature exceeds B°C (°F), the compressor stops.
09 12 18 24
A12122020
B (°C) 120 120 120 120
09 12 18 24
A12122020
B (°F) 248 248 248 248
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