Michigan Mechanic Certification- HVAC (Latest
) Qs and Ans Most Comprehensive
to Pass the Exam, 100% Verified - PDF
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Practice questions for this set
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Low pressure gas enters and high pressure gas leaves
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1 Purpose of a compressor 2 Cooling system leak diagnosis
Symptoms of a failing ambient
3 4 Cause of low heater output
temperature switch
Don't know?
Terms in this set (42)
Cooling system leak diagnosis Pressure test or dye test
, Purpose of a radiator The purpose of the radiator is to dissipate heat
that is picked up by coolant in the engine into the
air passing through its fins and tubes
Symptoms of low coolant Engine overheating and no heat from the HVAC
system
Purpose of the thermostat The purpose of the thermostat is to trap the
coolant in the engine until it reaches it operating
temperature
Cause of low heater output Low coolant level, clogged heater core, leaking
heater core
Heater core hose routing The supply hose from the heater core should run
from the closed side of the thermostat to the
heater core and the return hose should run from
the heater core to the engine
Heater core operation The blower motor blows air through the heater
core fins and is warmed through the principle of
conduction
Heater control valve purpose This valve controls the flow of the coolant to the
heater core to control the temperature of the air
desired by the operator
) Qs and Ans Most Comprehensive
to Pass the Exam, 100% Verified - PDF
Save
Practice questions for this set
Learn 1 /7 Study with Learn
Low pressure gas enters and high pressure gas leaves
Choose an answer
1 Purpose of a compressor 2 Cooling system leak diagnosis
Symptoms of a failing ambient
3 4 Cause of low heater output
temperature switch
Don't know?
Terms in this set (42)
Cooling system leak diagnosis Pressure test or dye test
, Purpose of a radiator The purpose of the radiator is to dissipate heat
that is picked up by coolant in the engine into the
air passing through its fins and tubes
Symptoms of low coolant Engine overheating and no heat from the HVAC
system
Purpose of the thermostat The purpose of the thermostat is to trap the
coolant in the engine until it reaches it operating
temperature
Cause of low heater output Low coolant level, clogged heater core, leaking
heater core
Heater core hose routing The supply hose from the heater core should run
from the closed side of the thermostat to the
heater core and the return hose should run from
the heater core to the engine
Heater core operation The blower motor blows air through the heater
core fins and is warmed through the principle of
conduction
Heater control valve purpose This valve controls the flow of the coolant to the
heater core to control the temperature of the air
desired by the operator
