Outdoor Unit (25/35 class) Si21-20594 Function and Control2.9 Fan ControlOutline Fan control is carried out according to the following priority.1. Fan ON control for electric component cooling fan2. Fan control when defrosting3. Fan OFF delay when stopped4. ON/OFF control when cooling operation5. Tap control when drooping function is working6. Fan control when forced operation7. Fan control during heating operation8. Fan control for pressure difference upkeepDetail Fan OFF Control when Stopped Fan OFF delay for 60 seconds must be made when the compressor is stopped.2.10 Moisture Protection Function 1 (Securing of DifferentialPressure and Blown Air Temperature)Outline To secure the reliability of the compressor (for dryness of suction refrigerant and differentialpressure) which is the primary purpose of the compressor, the lower limit of the outputfrequency is limited to two stages under the condition of outside air temperature. This time, inaddition to this purpose, this function is adopted also for prevention of cold draught by securingthe blown air temperature at the time of heating operation by low-temperature out side air.Processing 1. At the first step During operation of compressors. Outdoor temperature ≤ DOA1CG If and are under the simultaneous condition with AND, the lower limit of frequency inthis function is set at FCG7. Compressors stop. Outdoor temperature ≥ DOA2CG If and are under the simultaneous condition with OR, the lower limit of frequency at thefirst step control is cancelled.2. At the second step During operation of compressors Outdoor temperature ≤ DOA3CG If and are under the simultaneous condition with AND, the lower limit of frequency inthis function is set at FCG8. Compressors stop. Outdoor temperature ≥ DOA4CG If and are under the coordinate condition with OR, the lower limit of frequency at thesecond step control is cancelled.