ESCO HEAT PUMP FINAL SCRIPT PAPER
2026 VERIFIED SOLUTIONS FULL CONTENT
◉ It is not always a good idea to immediately connect a standard
gauge manifold set and hoses to a heat pump when a problem is
suspected because;
Answer: The charge is critical, sometimes to 1/2 oz. refrigerant.
◉ Which component is responsible for changing the direction of the
flow of refrigerant?
Answer: Reversing valve.
◉ Some heat pump systems use a ______________ as a metering device.
Answer: Fixed orifice.
◉ The slide valve and piston in the reversing valve is actuated by
pressure directed through the;
Answer: Solenoid and pilot valve.
◉ During the heating cycle, the outdoor coil is use as;
Answer: The evaporator.
, ◉ During the cooling cycle, the indoor coil becomes;
Answer: The evaporator.
◉ During the defrost cycle, the outdoor fan is usually;
Answer: Turned off.
◉ Heat pump systems which use a thermostatic expansion valve at
each coil will also have;
Answer: A by-pass lines with check valves.
◉ Refrigerant flow through the compressor;
Answer: is always the same regardless of operating mode.
◉ Because of the possibility of liquid flood-back, a heat pump that
uses a reciprocating compressor should be equipped with a;
Answer: Suction Accumulator.
◉ A scroll type compressor;
Answer: is less susceptible to damage from liquid flood-back.
◉ On a split system heat pump. A "no heat/no cooling" service call,
you turn the thermostat to the fan on/ cont position and the indoor
fan operates. This action verifies that;
2026 VERIFIED SOLUTIONS FULL CONTENT
◉ It is not always a good idea to immediately connect a standard
gauge manifold set and hoses to a heat pump when a problem is
suspected because;
Answer: The charge is critical, sometimes to 1/2 oz. refrigerant.
◉ Which component is responsible for changing the direction of the
flow of refrigerant?
Answer: Reversing valve.
◉ Some heat pump systems use a ______________ as a metering device.
Answer: Fixed orifice.
◉ The slide valve and piston in the reversing valve is actuated by
pressure directed through the;
Answer: Solenoid and pilot valve.
◉ During the heating cycle, the outdoor coil is use as;
Answer: The evaporator.
, ◉ During the cooling cycle, the indoor coil becomes;
Answer: The evaporator.
◉ During the defrost cycle, the outdoor fan is usually;
Answer: Turned off.
◉ Heat pump systems which use a thermostatic expansion valve at
each coil will also have;
Answer: A by-pass lines with check valves.
◉ Refrigerant flow through the compressor;
Answer: is always the same regardless of operating mode.
◉ Because of the possibility of liquid flood-back, a heat pump that
uses a reciprocating compressor should be equipped with a;
Answer: Suction Accumulator.
◉ A scroll type compressor;
Answer: is less susceptible to damage from liquid flood-back.
◉ On a split system heat pump. A "no heat/no cooling" service call,
you turn the thermostat to the fan on/ cont position and the indoor
fan operates. This action verifies that;
