Tappan Flame Disturbance by Airflow

Furnace starts but shuts down when the blower comes on.

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.

Possible Causes

Cracked heat exchanger on Tappan furnace, misaligned burners, incorrect blower speed causing negative pressure in burner area

Safety: This symptom can indicate a cracked heat exchanger and potential CO hazard. Turn off the furnace and do not operate until inspected.

Steps:

Do not attempt to repair a heat exchanger yourself.
Contact a licensed HVAC technician to inspect the heat exchanger, burner alignment, and blower settings.
If a crack is confirmed, the heat exchanger or entire furnace must be replaced.

Professional Required 5/5

Heat Exchanger

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