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HVAC
NATE Core & Service Certification
Heat Pump Systems
Knowledge Check
Heat Pump Systems
Knowledge Check
Knowledge Check
1 / 9
A heat pump seems to run in cooling mode even when the thermostat is calling for heat. The most likely cause is:
A
A stuck reversing valve or failed solenoid
B
Dirty indoor coil
C
Low refrigerant charge
D
Failed defrost board
Check Answer
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