If an air conditioning system is operating with an 80F return air temperature and a 50F supply air temperature
A) the large temperature drop indicates excessive airflow
B) you should be happy the air is so cold
C) the system is operating correctly
D) the large temperature drop indicates the airflow is less than required
Question 2
How can a technician check to see if the coil and condensing unit on an AC split system are matched?
A) Check to see that both pieces are manufactured by the same company
B) The refrigerant line stub out sizes should be the same
C) The first two digits of the equipment model number should be the same
D) Call the equipment supplier and provide the system model numbers
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A typical two-step ECT circuit showing that when the coolant temperature is low, the PCM applies a ...