32
Day & Night Blower Motor Low Heat Speed Fault

Furnace LED flashes code 32; blower may run unexpectedly or not at all. Indicates low heat speed or blower fault on some Day & Night models.

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Safety Warning

This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.

If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.

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Possible Causes

Failed ECM blower motor module, open heat speed tap on PSC motor, loose blower harness at control board, seized blower wheel

How to Fix / Troubleshooting

Safety first: Turn off power before accessing the blower compartment.

  • Check blower operation: Call for heat and observe whether the blower starts after ignition. If it does not start or starts late, overheating and limit trips may occur.
  • Inspect wiring: Remove the blower door and verify the blower motor plug or harness is fully seated on the motor and control board.
  • Spin blower wheel: With power OFF, reach into the blower housing and gently spin the blower wheel. It should rotate freely without scraping.
  • Fan-only test: Set the thermostat fan switch to ON. If the blower does not run, the motor or control board fan relay may be faulty.

ECM motors require specific diagnostics and programming. If code 32 persists, have a technician test the motor and replace it with the correct Day & Night blower assembly if needed.

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Repair Difficulty

Hard 4/5

Required Part

Indoor Blower Motor
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