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If this is an electric heater it may have a blower/fan behind the heating elements. If this fan fails to run at its normal RPM than the heater is likely to overheat and shut down It may take a few minutes if the fan is turning but slower then the normal speed.
you will have to look into why the unit is tripping and needs resetting. Heaters usually have a fan delay, meaning that when the heat is satisfied, the fan continues to run for about an minute. If not, it could cause an overheating issue and trip a safety. Look for that to start with.
Mine has two switches one says cool - off - heat, the other says fan on - fan auto. For heat I set the first to heat and the second to auto. This puts everything in to heat mode and the fan runs from the furnace control now not constantly. Hope this helps you out.
its the fan control AFC not shutting off , it comes on at temp rise say 150f drops back to 130f with fan on , burner shuts off fan runs untill temp falls to 100f the fan shuts off in this case it keeps running
Is there a setting on the thermostat for Auto or Fan? If so, make sure it is in the Auto setting. You will have a contactor that turns on the elements and a relay for the fan. Follow the wiring diagram to see which relay energizes the fan then unplug it to see if the fan stops.
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