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Gas Furnace Smart Valve, Ignitor, and Flame Sensor Troubleshooting!

In this HVAC Diagnosis Video, I go over the Ignition Troubleshooting of a Smart Valve, Ignitor, and Flame Sensor by Honeywell. I show the voltages of each of the wires connected to the smart valve and where they are located, how to test the flame sensor, how to test the hot surface ignitor, what kind of hot surface ignitors are available, how to change out the ignitor and flame rod as well as adjustments to the pilot and how the whole thing works together for ignition.

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