– 31 –
EDC Defrost
Defrost
The compressor is turned off and the defrost heaters are turned on by energizing the K2 relay and sending
120 VAC through the DF terminal. During this time, the defrost termination is monitored through the DT
terminal to determine when the defrost thermostat opens. If less than 25 minutes of defrost heater run
time the control will immediately enter the dwell state. If the defrost thermostat does not open during the
prescribed 25 minutes or less, defrost will be terminated by time (max 40 minutes) and the dwell state will be
bypassed.