Daikin J Series, Руководство по обслуживанию

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Control Specification SiBE041025
32 Function and Control
2.12 Malfunctions
2.12.1 Sensor Malfunction Detection
Sensor malfunction may occur in the thermistor.
Relating to Thermistor Malfunction
1. Outdoor heat exchanger thermistor
2. Discharge pipe thermistor
3. Radiation fin thermistor
4. Outdoor temperature thermistor
2.12.2 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°C (depending on the model), the
system shuts down the compressor.
„
If the inverter current exceeds 14 A, the system shuts down the compressor.
2.12.3 Refrigerant Shortage Control
Detecting by power consumption
If the power consumption is below the specified value and the frequency is higher than the
specified frequency, it is regarded as refrigerant shortage.
The power consumption is small comparing with that in the normal operation when refrigerant is
insufficient, and refrigerant shortage is detected by checking a power consumption.
Refer to “Refrigerant shortage” on page 82 for detail.
Frequency
Power consumption
Refrigerant shortage zone
50 Hz
(R11262)