img-download-app
img-download-app

A customer complains about a hiss coming from under the hood after turning off the car. Tech A says the noise is coming from the AC system and :

Visit our website for other HVAC topics now!
Related questions
What three points concerning primary system leaks at seal tables should be remembered to minimize the risk of developing leaks at this location?
When pressure testing the cooling system on a late model gas engine the pressure on the tester drops but no leaks can be found in the engine compartment. Tech A starts the engine and seeing the pressure on the tester increase says that there is an internal leak, a blown head gasket. Tech B says that there cannot be an internal leak because the engine oil looks normal, not milky like it would be if coolant were present, and there is no white smoke coming from the exhaust pipe. Who is right ?
why do electric motors build up heat?
What is the purpose of a run capacitor?
what is meant by a steady state condition when referring to setting a heating anticipator
What does a cold anticipator do
The tangential slots in an oil burner nozzle are to control the volume of oil flow through the nozzle.
Name a function of the low pressure control
Do electrons flow through a capacitor?
When a magnetic starter overload relay is used, what happens if the voltage drops to less than 90% of the rated voltage?
Field of force
The Chemical Drain Tank contents are recirculated for sampling:
Fuel pumps are equipped with _______ at the inlet to prevent particulate matter from entering the pump.
Operation of the thermostatic switch depends on the temp of the
Tech A says that moisture in the system can freeze in the expansion valve and stop the system from cooling. tech B says that moisture in the system will react with R12 to form a corrosive acid. Who is right?
Hot-arid climatic design responses
Seasonal energy efficiency ratio (SEER)
All of the following are classifications of anti freeze except
Proton