NATE HEAT PUMP TRAINING STUDY SHEET
2026 UPDATED QUESTIONS AND ANSWERS
◉A voltage reading across a closed contact in a 24V control circuit
indicates... Answer: Pitted or dirty contacts
◉The first two checks typically made on an electronic check are...
Answer: Presence of proper input signals and proper output signals
◉In a low voltage circuit, a corroded wire-to-terminal connection
acts in the circuit like... Answer: An additional resistor
◉The continuity of a fuse should be tested by... Answer: Checking
resistance with the power off
◉The first check made for most electrical troubleshooting is...
Answer: Voltage check of the supply line
◉To properly check an energized compressor circuit... Answer: The
technician should use a VOM set for volts
, ◉The following conditions exist in a circuit that supplies power to
three parallel loads
-One load is resistive
-One load is capacitive
-One load is inductive Answer: The total current in the circuit when
operating will be the sum of the currents through each load
◉The technician is using an analog multimeter to check a run
capacitor. With the meter set to ohms, the needle swings toward
zero and then slowly rises toward infinity... Answer: This tells the
technician that the capacitor charges and discharges
◉If the technician believes that a hermetic compressor has a
permanently open internal protector... Answer: The technician
should test the compressor while it is cool
◉A control string is defined as two or more switch contacts
connected in a circuit, or set of circuits, to control a load. In order to
troubleshoot a load controlled by a control string the technician
must first... Answer: check for proper voltage applied across the
load
◉The technician suspects that an outdoor thermostat used to bring
on auxiliary heat may out of calibration. The thermostat is a CLOSE
ON FALL type that is adjustable. One method for checking the
2026 UPDATED QUESTIONS AND ANSWERS
◉A voltage reading across a closed contact in a 24V control circuit
indicates... Answer: Pitted or dirty contacts
◉The first two checks typically made on an electronic check are...
Answer: Presence of proper input signals and proper output signals
◉In a low voltage circuit, a corroded wire-to-terminal connection
acts in the circuit like... Answer: An additional resistor
◉The continuity of a fuse should be tested by... Answer: Checking
resistance with the power off
◉The first check made for most electrical troubleshooting is...
Answer: Voltage check of the supply line
◉To properly check an energized compressor circuit... Answer: The
technician should use a VOM set for volts
, ◉The following conditions exist in a circuit that supplies power to
three parallel loads
-One load is resistive
-One load is capacitive
-One load is inductive Answer: The total current in the circuit when
operating will be the sum of the currents through each load
◉The technician is using an analog multimeter to check a run
capacitor. With the meter set to ohms, the needle swings toward
zero and then slowly rises toward infinity... Answer: This tells the
technician that the capacitor charges and discharges
◉If the technician believes that a hermetic compressor has a
permanently open internal protector... Answer: The technician
should test the compressor while it is cool
◉A control string is defined as two or more switch contacts
connected in a circuit, or set of circuits, to control a load. In order to
troubleshoot a load controlled by a control string the technician
must first... Answer: check for proper voltage applied across the
load
◉The technician suspects that an outdoor thermostat used to bring
on auxiliary heat may out of calibration. The thermostat is a CLOSE
ON FALL type that is adjustable. One method for checking the
