Fan Speed Control

Fan Speed Control

The condenser fan speed control can provide reliable operation when the outdoor temperature is as low as -29 deg C. The components required are, a condenser fan motor designed for variable speeds to be used in conjunction with a solid state fan-speed control and a refrigerant transducer. The transducer senses the head pressure of the compressor and the fan speed control varies the speed of the fan to maintain a constant condensing temperature. On a multi fan condenser the additional fan motors are controlled by ambient thermostats.