HVAC Electrical Practice Exam with complete Solutions

HVAC Electrical Practice Exam with complete Solutions The heat pump requires ______________thermostat. a. single stage heating operation b. two stage heating operation c. three stage heating operation - Answer-two stage heating operation the thermostat will look for the ____ circuit first before using the battery back-up power. a. R b. C c. Y - Answer-C the ____ circuit is a 24 volt L1 from the transformer. a. R b. C c. Y - Answer-R the ______ circuit is a 24 volt L1 control string compressor circuit. a. R b. C c. Y - Answer-Y The _____ circuit is a 24 volt L1 control string Fan circuit. a. G b. AUX c. O/B - Answer-G The _____ circuit is a 24 volt L1 control string Reversing Valve circuit. a. G b. AUX c. O/B - Answer-O/B