How To Troubleshoot A Gas Furnace Gas Valve Youtube If you're trying to figure out how to diagnose a bad furnace gas valve, this is a video that explains what the gas valve does, why it's important, how to fig. Take the leads off the gas valve and check there. if the 24 volts is present, then it likely has a problem. perhaps the printed circuit board or electric solenoid attached to the gas valve isn’t telling the valve to open. if not, then maybe the gas valve board is signaling it to open, but the valve is somehow stuck.
Goodman Gas Furnace Troubleshoot And Replace Gas Valve Youtube Replace the batteries if needed and check the wiring. 3. clean the valve. if accessible, clean the valve to remove any debris or buildup that may cause it to stick. regular maintenance can prevent issues like the furnace gas valve not opening, which can disrupt your heating system’s functionality. 4. 4. inconsistent flame. the flame might be coming on for a few seconds but then shutting off. to check and solve this issue you can see if the voltage is off or the gas pressure is low to the valve by putting a “t” (fitting in line with the hose) to connect to your manometer. Gas supply. ensure the furnace’s gas supply is in the on position. the main supply valve should be within six feet of the furnace. follow the black metal gas pipe outward from the furnace to the valve. the valve typically has a brightly colored lever or knob. the gas supply is on when the lever is parallel to the pipe. Check the inlet and the outlet side to see if the pressure is dropping on either side of the valve. another reason the flame could drop out after only a few seconds of burning is the flame sensor. if the sensor doesn’t detect the flame, the control board will signal the gas valve to shut down.
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