Control Specification SiBE041011EC45 Function and Control3.6 Freeze-up Protection ControlDuring cooling operation, the signal sent from the indoor unit determines the frequency upperlimit and prevents freezing of the indoor heat exchanger. (The signal from the indoor unit isdivided into zones.)The operating frequency limitation is judged with the indoor heat exchanger temperature.3.7 Heating Peak-cut ControlDuring heating operation, the indoor heat exchanger temperature determines the frequencyupper limit to prevent abnormal high pressure.The operating frequency limitation is judged with the indoor heat exchanger temperature.A (°C) B (°C) C (°C)7 5 3(R14718)Reset zoneIndoor heat exchangerthermistor temperatureUp zoneKeep zoneDropping zoneStop zone0˚CC˚CB˚CA˚C13˚CA (°C) B (°C) C (°C) D (°C) E (°C)65 56 55 53 51Zone ControlStop zone When the temperature reaches the stop zone, the compressor stops.Dropping zone The upper limit of frequency decreases.Keep zone The upper limit of frequency is kept.Up zone The upper limit of frequency increases.Reset zone The upper limit of frequency is canceled.Indoor heat exchangerthermistor temperatureStop zoneDropping zoneKeep zoneUp zoneReset zone(R14645)D˚CC˚CB˚CA˚CE˚C
