Ruud
Indoor Blower Motor Failure
Ruud outdoor unit runs but indoor blower does not; weak or no airflow from supply registers.
Advertisements
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.
Advertisements
Possible Causes
Failed PSC or ECM blower motor, Blown indoor control board fuse, Failed blower capacitor (PSC motors), Seized blower bearings
How to Fix / Troubleshooting
Safety first: Turn off power to the air handler/furnace at the breaker before opening panels.
- Step 1 – Thermostat fan test: Set thermostat to FAN ON. If the blower does not start, the issue is likely with the blower circuit.
- Step 2 – Check board fuse: Open the indoor unit and locate the low-voltage fuse on the Ruud control board. Replace if blown with the same rating.
- Step 3 – Inspect blower motor and capacitor: For PSC motors, locate the run capacitor and check for bulging or leaking. Replace with the same µF and voltage rating if suspect.
- Step 4 – Spin blower wheel: Try turning the blower wheel by hand. If stiff or seized, the motor bearings may have failed and the motor should be replaced.
- Step 5 – Technician service: ECM motors require specialized diagnostics and programming; have a technician test and replace if needed.
Advertisements
Repair Difficulty
Medium
3/5
Required Part
Blower Motor Capacitor
Check Price on Amazon
We may earn a commission from links on this page.
Advertisements