Tempstar Indoor Blower Failure

Tempstar outdoor unit runs but indoor blower does not, little or no air from vents

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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 blower motor, Failed blower capacitor (PSC), Faulty blower relay on control board, Loose blower wiring

How to Fix / Troubleshooting

Safety first: Turn OFF power to the air handler/furnace at the breaker.

Steps:

  • 1. Set fan to ON: At the thermostat, set fan to ON. If no airflow, the blower is not running.
  • 2. Access blower compartment: Remove the lower panel and inspect the blower assembly for obstructions or broken belts (if belt-driven).
  • 3. Check wiring: Ensure motor wires and harnesses are firmly connected to the Tempstar control board and capacitor.
  • 4. Listen for motor hum: Restore power briefly; if the motor hums but does not spin, the capacitor or motor may be bad. Turn power off again.
  • 5. Call a technician: Motor and capacitor testing/replacement require electrical skills and should be done professionally.
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Repair Difficulty

Hard 4/5

Required Part

Blower Motor Capacitor
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