SC Air Conditioning Practice Questions - South Carolina Air Conditioning Contractor Examination Exam

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A 24-volt cooling-only control circuit is wired R to Y through the thermostat, then Y through a high-pressure switch and low-pressure switch to the contactor coil, with the coil returning to C. If the high-pressure switch opens, the compressor will:

Run with the indoor blower locked out Reverse into heating Continue to run because the thermostat is still calling Stop because the contactor coil circuit is interrupted

Correct Answer:

Stop because the contactor coil circuit is interrupted

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