Furnace Not Heating: How to Replace Control Board @TomahawkDIY
Furnace Not Heating: How to Replace Control Board  @TomahawkDIY
Uploaded May 2020 | Updated September 2026, 2 weeks ago
My furnace stopped heating. With some troubleshooting, I found that the control board failed and needed to be replaced. Get a Honeywell universal control board on Amazon
Amazon USA: amzn.to/3cDTtVL
Amazon Canada: amzn.to/2yUMXM0
Amazon UK: amzn.to/2zI73Jd
(affiliate links)

It took some effort to figure out that the control board had failed. Replacing it was pretty easy - using photos of the wiring, following the Universal Control Board instructions helped ensure I reconnected the wiring properly. The igniter kept getting the pilot light lit, but the furnace never released gas to actually fire the burner.

This repair was on a Tempstar furnace. After replacing the control board, it turns out the real probably was probably the capacitor. Be sure to watch my other video to find out how to replace those parts. It would be ideal to replace all these at the same time.

Word of Advice TV - Control Board Troubleshooting: youtu.be/52iq9rYI0mI

card @ 2:57

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Furnace Not Heating: How to Replace Control Board

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