HVAC related?
Access panels let you remove the heater core without removing the dash on some vehicles.
What is True
If a door doesn't work on a vaccum system. What tool can help diagnose a vaccum issue?
What is a Vaccum Gauge
In a passenger car. What supplies the vaccum to the HVAC System?
What is an engine.
In a vaccum controlled system. What is the default mode if vaccum is lost.
What is defrost.
When should you open the cooling system cap, when the engine is at operating temp (210F).
When is Never
When diagnosing a vaccum leak. listening for a hiss can indicat a leak.
What is Yes.
In a mechanical HVAC system. What controls the acutators
What are Cables and Rods.
Blower motors job is push air through the condensor
What is False.
When should you recommend a Cabin filter change
What is, when the manufactuer says to.
What is No.
Heater Cores are made from what ?
What is Copper, Brass, or Aluminium.
Internally clogged evap can cause a no heat concern?
What is false
What can clog a cabin air filter
What is Dirt or Debris
What tool can be used to test for Voltage or Ground
What is a Digital Multi Meter.
What is No.
Debris in the ____ can cause low HVAC Airflow
What is the Air intake(inlet to the plenum).
What does a Functions Test consist of
What is running through each mode to test everything.
Solving a ventilation concern never requires you to replace a mode door
What is False.
Vacuum motors are used for mode door operation
What is True.
Technicians use a DMM on a circuit to find what?
What is B+(voltage) or Ground.
Tech A says that the hot water control valve stops water flow to the heater core.
Tech B says that the hot water control valve are only made of plastic.
Who is Tech A
Tech A says that Doors can be controlled by cables and rods?
Tech B says that the driver can control Blower speeds, Temp and Modes.
What is Both are correct.
Tech A says that concers of the heating system like leaks can be singled out by using a vaccum tester.
Tech B says that the Cooling System Pressure Tester is never a good idea to check a heating system repair.
What is Both are wrong.
Tech A says that no vaccum supplied. the controls will not be able to move the acutuators.
Tech B says that Cable operated controls need a steady supply of vaccum to move acutators.
Who is Tech A
Tech A says that air in the heating system can cause a no heat concern.
Tech B says that the inlet and outlet of the heater core should only be a 20-25F change when working
Who is Tech A