41
Ducane
Blower Motor Fault / Low RPM
Code 41, blower running slower than expected, poor airflow from registers
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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
Failing ECM blower motor on Ducane variable-speed furnace, Faulty blower capacitor (PSC motors), Obstructed blower wheel, Low line voltage
How to Fix / Troubleshooting
Safety first: Turn off power before working on the blower compartment.
- Step 1 – Inspect filter and ducts: Confirm filter is clean and return/supply ducts are not collapsed or blocked.
- Step 2 – Check blower wheel: Remove blower compartment door and visually inspect the blower wheel for dust buildup or foreign objects. Clean if heavily soiled.
- Step 3 – Test capacitor (PSC only): If your Ducane model uses a PSC motor, have a technician test and replace the run capacitor if out of spec.
- Step 4 – ECM diagnostics: For ECM motors, a professional should perform module diagnostics and check for fault codes on the motor module if present.
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Repair Difficulty
Hard
4/5
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