Type 1: Standard defrost
1) If Trı-2ć, when Tpİ-6ć, enter defrost.
2) If -12ćİTr˘-2ć, when Tpİ-6ć, please refer to the following chart.
3) No matter the ambient temperature, when Tpİ-16ć, enter defrost.
Type 2: Non-standard defrost (rectify defrost data by the device)
1) If Trı6ć, when Tpİ-6ć, enter defrost.
2) If -18ćİTr˘-6ć, when Tpİ-6ć, please refer to the following chart.
3) No matter the ambient temperature, when Tpİ-18ć, enter defrost.
2.4 Manual defrost
Indoor sends defrost signal to outdoor, and the outdoor will receive the defrost signal when
compressor is running in heating mode, then enter the defrost process. When outdoor coil
temperature arrives the defrost-end point and the defrost time is over 5 minutes, outdoor will send
the defrost-end signal to finish the defrost.
3. Compressor crankcase heater working condition
By the N.C. (normal close) auxiliary point of AC contactor to control, when compressor stops, the
heater will work; when compressor works, the heater will stop.
4. System protection function
4.1 Anti-freezed protection
-6ć
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