(313D) Residential Air Conditioning Systems Mechanic Certification Practice Test
FREE 313D Electrical Schematics and Controls Questions and Answers
On a residential air conditioning schematic, what is the function of a contactor?
Select your answer
A
To step down high voltage to low voltage for the control circuit.
B
To use a low-voltage signal to switch the high-voltage power to the compressor and condenser fan motor.
C
To protect the system from operating in dangerously low or high refrigerant pressure conditions.
D
To control the speed of the indoor blower motor based on the thermostat setting.
Hint
