REFRIGERATION CYCLE
GAS FURNACE
RESIDENTIAL A/C
ELECTRIC HEATERS
TROUBLESHOOTING
100
The compressor, condenser, evaporator and metering device.

What are the components that make up a refrigeration system?

100

The fuel source for a gas-fired furnace.

What is Natural Gas or LP (Liquid Petroleum)

100

1.5 ton through 5 ton.

What is the tonnage that is considered residential A/C?

100

The sequencer or contactor is used on electric heaters.

What is the component used to energize the electric heater?

100

The fuse has voltage across it.

What is the fuse is blown?

200

The __________ is the component that controls the superheater.

What is a metering device?

200

The hazardous gas produced when fuel is burnt.

What is Carbon Monoxide?

200

A central self-contained unit.

What is a package unit?

200

The balance point.

What is when the heat is being added to the structure, which matches what is being lost?

200

The __________ __________(on true suction) will help the technician determine if a heat pump reversing valve is defective.

What is temperature differences?

300

The component designed to release the heat to the outdoors?

What is the condenser?

300

The _________ or __________ are used to remove flue gases from the heat exchanger chamber.

What is an inducer fan motor and natural draft?

300

A remote unit.

What is a split unit?

300

The balance point or defrost.

What is when it is necessary to energize the electric heater?

300

The abnormally low suction pressure in the heat pump mode of operation is an indication.

What is a dirty outdoor coil?

400

The component designed to absorb heat.

What is the evaporator?

400

This component turns the furnace off in the event of over-heating.

What is a limit switch?

400

The interconnecting copper lines of a remote unit.

What is the vapor and liquid?

400

True or False:

The electric heater can be re-strung.

What is true?

400

A _______ ________ _______ will cause a gas furnace to shut down, if the gas furnace starts normally and runs for a few seconds, but then shuts down (this process will repeat multiple times)

What is a defective flame sensor?

500

The manufacturer determines when the _________ is energized?

What is the reversing valve?

500
The benchmark gas pressure at a gas-fired furnace manifold.

What is 3.5 inches in w.c.?

500

The recommended superheat.

What is 18 - 20 degrees?

500

The electric heater is referenced as an emergency heater when this component has failed.

What is the heat pump?

500

The delta H of a 3 ton A/C system operating normally.

What is a delta H of 6.67? 

M
e
n
u