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Hayley JonesJul 25, 2025
How to troubleshoot a Reznor Heater venter motor that will not start?
- KKathryn McbrideJul 26, 2025
If the venter motor on your Reznor Heater won't start, begin by ensuring the unit has power and checking the supply fuses or circuit breaker. Next, verify that the thermostat is turned up to supply 24V power to the integrated circuit board. Check the control transformer output. Inspect the integrated circuit board fuse and replace it if blown (3A, type ATC or ATO, 32VDC) after correcting the cause. Tighten connections at the circuit board and/or motor terminals to ensure power is reaching the venter motor. If these steps don't resolve the issue, the integrated circuit board or the venter motor itself may be defective and require replacement.