Air Conditioning Final Exam Correct 100%(SCORED A+)

A customer calls with an insufficient cooling compliant. upon arrival to the service call it is found that the outdoor condensing unit is operating, but the indoor blower motor is not in operation. Technician A says that it is possible that it is bad fuse to the furnace Technician B says the control transformer could also be at fault Who is correct? - ANSWER Neither is correct What is commonly used to measure a deep vacuum? - ANSWER a micron gauge The system used to measure the efficiency of a split system air conditioner is... - ANSWER SEER - Seasonal Energy Efficiency Ratio To measure subcooling.... - ANSWER subtract the liquid line temperature from the high side condensing temperature When must a system be evacuated? - ANSWER when the system has been opened to the atmosphere What is the purpose for insulating a suction line? - ANSWER To prevent condensation from forming After a compressor motor is severally burnt, what accessory must be added as an aid to rid the air conditioning system of acid? - ANSWER an acid core suction line dryer A room thermostat should be mounted... - ANSWER Near a return air grill When a system incorporates a three-way service valve? - ANSWER It must be in mid position during evacuation When charging a system using the sub cool method, what type of metering device must be used in the system? - ANSWER a TXV In a sealed system, as the pressure increases... - ANSWER the temperature increases What does the "G" terminal used for on a thermostat? - ANSWER call for fan on Where is solid 18 gauge wire is typically used where? - ANSWER The thermostat control wire