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Heat Pumps Questions and Correct Answers
reversing valve Ans: — an air to air pump has many of the same
components as an air conditioning system. the major difference is
that a heat pump has a
demand defrost happens only when when needed and timed
defrost is based on timed /temp Ans: — what is the difference btw
demand defrost and timed defrost
Outdoor ambient tstat Ans: — The tstat controls the auxiliary
electric heat according to the outdoor temp
Initial balance point Ans: — The outdoor temp at which the heat
pump provides the same amount of heat as the heat loss of the
conditioned space without auxiliary heat is known as the
Slightly above the initial balance point Ans: — At what temp is an
outdoor ambient tstat normally set
The outdoor fan is inoperative Ans: — The outdoor coil is frozen
solid on a no heat service call....most likely reason is
The buildings heating load Ans: — In order to determine a heat
pump balance point,you must first calculate
Cooling load Ans: — Heat pump are sized to handle the
Depends on the mode of operation Ans: — On a heat pump,which
coil is considered the evaporator
As near to the main return air grill as possible Ans: — Room tstats
for heat pumps should be i stalled
Emergency heat mode Ans: — When the heat pump compressor
has malfunctioned,the customer has the option to switch the
system into
Teach customer to program the tstat Ans: — Start up with a night
setback digital tstat require tech to always
Simulate defrost cycle Ans: — The heat pump defrost board can be
manipulated by the tech to
© 2025 All rights reserved
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In a cold climate Ans: — The air to air heat pump outdoor unit is
most efficient if located
ECM fan motor Ans: — of the following are innovations that may
be found on new high efficiency units
Simply disconnect power to the unit momentarily Ans: — How
may a lockout(impedance)relay be reset
Approximately 2°F Ans: — The TD btw 1st and 2nd bulbs for
heating on a heat pump tstat is
Dividing the btus removed by watts consumed during cooling
season Ans: — SEER is calculated by
The system will not properly remove humidity from the
conditioned space Ans: — If the indoor fan is operating at
excessive speed in cooling mode
Maintain 500 microns for 15 minutes Ans: — What is the industry
standard for a deep vacuum
By weight Ans: — Most prefered method of charging any system in
the field is
Use heat paste and wet rags while brazing the new valve Ans: —
Good service practice for installation of a reversing valve includes
A duel run capacitor,which allows a small amount of current to
flow through the windings Ans: — Off cycle crankcase heat is
provided by
Airflow CFM is within normal range Ans: — You are checking for
proper airflow in CFM on a three ton heat pump system,.....one
return grill measuring 24"×24" ...which has a net free area of
3.4square ft....you could measure air velocity and calculate an
average of 400FPM.....from this info you can
Second heating stage of indoor tstat Ans: — What control
operates1st stage of secondary heat
A max of 10 minutes Ans: — What is the industry standard for
max duration of defrost
© 2025 All rights reserved
Heat Pumps Questions and Correct Answers
reversing valve Ans: — an air to air pump has many of the same
components as an air conditioning system. the major difference is
that a heat pump has a
demand defrost happens only when when needed and timed
defrost is based on timed /temp Ans: — what is the difference btw
demand defrost and timed defrost
Outdoor ambient tstat Ans: — The tstat controls the auxiliary
electric heat according to the outdoor temp
Initial balance point Ans: — The outdoor temp at which the heat
pump provides the same amount of heat as the heat loss of the
conditioned space without auxiliary heat is known as the
Slightly above the initial balance point Ans: — At what temp is an
outdoor ambient tstat normally set
The outdoor fan is inoperative Ans: — The outdoor coil is frozen
solid on a no heat service call....most likely reason is
The buildings heating load Ans: — In order to determine a heat
pump balance point,you must first calculate
Cooling load Ans: — Heat pump are sized to handle the
Depends on the mode of operation Ans: — On a heat pump,which
coil is considered the evaporator
As near to the main return air grill as possible Ans: — Room tstats
for heat pumps should be i stalled
Emergency heat mode Ans: — When the heat pump compressor
has malfunctioned,the customer has the option to switch the
system into
Teach customer to program the tstat Ans: — Start up with a night
setback digital tstat require tech to always
Simulate defrost cycle Ans: — The heat pump defrost board can be
manipulated by the tech to
© 2025 All rights reserved
, 2 | Page
In a cold climate Ans: — The air to air heat pump outdoor unit is
most efficient if located
ECM fan motor Ans: — of the following are innovations that may
be found on new high efficiency units
Simply disconnect power to the unit momentarily Ans: — How
may a lockout(impedance)relay be reset
Approximately 2°F Ans: — The TD btw 1st and 2nd bulbs for
heating on a heat pump tstat is
Dividing the btus removed by watts consumed during cooling
season Ans: — SEER is calculated by
The system will not properly remove humidity from the
conditioned space Ans: — If the indoor fan is operating at
excessive speed in cooling mode
Maintain 500 microns for 15 minutes Ans: — What is the industry
standard for a deep vacuum
By weight Ans: — Most prefered method of charging any system in
the field is
Use heat paste and wet rags while brazing the new valve Ans: —
Good service practice for installation of a reversing valve includes
A duel run capacitor,which allows a small amount of current to
flow through the windings Ans: — Off cycle crankcase heat is
provided by
Airflow CFM is within normal range Ans: — You are checking for
proper airflow in CFM on a three ton heat pump system,.....one
return grill measuring 24"×24" ...which has a net free area of
3.4square ft....you could measure air velocity and calculate an
average of 400FPM.....from this info you can
Second heating stage of indoor tstat Ans: — What control
operates1st stage of secondary heat
A max of 10 minutes Ans: — What is the industry standard for
max duration of defrost
© 2025 All rights reserved
