Testing Furnace Gas Valve

Pull the wires off.

Testing furnace gas valve.

Screw back in the gas valve plug using a small amount of pipe dope. Locate the pressure tap on the gas valve and unscrew the plug. Then screw in your manometer. A solenoid valve that is filled with drudge might fail to open.

Unplug the appliance from the wall outlet. If this doesn t work read the nameplate mopd rating. Turn on the furnace and start it. Disassemble the valve and clean it out with a brush or rag.

Wait for the unit to cool if it has been in use. Take out the bolts in the service panel on the side of the furnace using a nut driver. Turn the gas off. This valve is usually found in the wall line leading to the dryer and is shut off by turning the handle perpendicular to the gas line.

If playback doesn t begin shortly try restarting your device. Great video troubleshooting this goodman furnace gas valve. Set the thermostat or the device s controller slightly above the current room temperature. The ratings listed must align with the pressure rating shown on the valve.

Lastly a low voltage can be the problem for its failure to open. Videos you watch may be added to the tv s watch history and influence tv recommendations. A simple measurement will tell you if your valve is bad or another part keeping voltage from the. Turn off the furnace at the wall control.

Turn the gas back on. There should not be a flame up there if the valve is working correctly. This one covers a simple way to find out if the gas valve is being energized on the newer gas furnaces. Turn off the gas feed line valve to the dryer.

Locate the gas valve. Turn off the gas supply valve to your appliance to test whether your valve is capable of shutting down properly. The manometer will give the reading in water column in inches. Some gas valves will have a pressure tap on both sides while some only have one on the furnace manifold side.

This video is part of the heating and cooling series.