How To Test Furnace Control Board

How to test furnace control board

Here are signs you may have a malfunctioning furnace control board: Uncomfortable temperatures: If your furnace starts to make you either too hot or too cold, and the thermostat settings seem fine, then the problem might be a control board that is turning components off too soon or letting them run too long.

How can you tell if a control board is bad?

Examine the circuit board and search for signs such as crushed components, bulges, damaged wires, cracks, misplaced or extra solder, burn marks and scratches that indicate that the board is either bad or requires replacement and professional assistance.

What causes furnace circuit board failure?

Voltages and surges can affect the function of the circuit board. Dirt can also cause a circuit board to fail--as dirt and dust build up and cause an insulated layer on the board, creating heat which will cause the board to overheat and burn out.

14 How to test furnace control board Images

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