Question

If the power to a condensing unit has been turned off for an extended period of time, the _________________________ should be energized first for the recommended time to protect the compressor from liquid floodback. A. blower motor B. thermostat C. crankcase heater D. condenser fan motor

Answer 1

C. Crankcase heater

Step-by-step explanation:

The crankcase heater of the compressor was developed to mitigate the problematic variation of temperature on the in and out sides of the crankcase that has the capacity to change the physical states of the refrigerant and oil, cause them migrate and possibly mix together. It does so by allowing the regulation of the temperature on the inside of the crankcase