Author Question: The first step in the diagnostic procedure when attempting to solve an HVAC customer problem is ________. (Read 80 times)

neverstopbelieb · **on:** Aug 13, 2021

Question 1

The ambient temperature is 70° F and the humidity is low. What should the high side gauge pressure be (AC system on)?
◦ 140 to 190 psi
◦ 10 to 50 psi
◦ 300 to 350 psi
◦ Not enough information to tell

Question 2

The first step in the diagnostic procedure when attempting to solve an HVAC customer problem is ________.
◦ Visual inspection
◦ Check for diagnostic trouble codes
◦ Check for technical service bulletins
◦ Verify customer concern