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Harry HallAug 17, 2025
What to do if my Rheem Heat Pump unit will not run?
- KKristy GlennAug 17, 2025
If your Rheem Heat Pump unit isn't running, several factors could be at play. Start by checking for correct voltage at the line voltage connections in the condensing unit. Also, make sure that the thermostat isn't out of calibration or set too high. Inspect the control board diagnostic codes. Look for blown fuses or tripped breakers and replace/reset them as needed. Check the transformer wiring and replace the transformer if it's defective. Reset the high-pressure control if it's open, and also refer to the high head pressure remedy. Do the same for the low-pressure control. Finally, verify the communication wiring if there's miswiring or the communication light is continuously on.
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