Condenser Fan: Description and Operation

System Outline

The radiator fan motor and condenser fan motor operates according to the water temp. SW NO.1, water temp. SW NO.2, A/C single pressure SW, and the A/C system condition. The FAN NO.1 relay, FAN NO.2 relay, FAN NO.3 relay are turned on/off, to operate the fan motors at low speed (In series), or high speed (In parallel).

Low Speed Operation
When the A/C system is operated, or the water temp. SW no.2 is turned on, the condenser fan motor and radiator fan motor rotate at low speed.

High Speed Operation
When the A/C single pressure SW is turned on, or the water temp. SW no.1 is turned on, the condenser fan motor and radiator fan motor rotate at high speed.