Testing Furnace Gas Valve

A simple measurement will tell you if your valve is bad or another part keeping voltage from the.

Testing furnace gas valve.

The manometer will give the reading in water column in inches. Turn off the gas feed line valve to the dryer. There should not be a flame up there if the valve is working correctly. Disassemble the valve and clean it out with a brush or rag.

Locate the front lower access panel to the appliance. Great video troubleshooting this goodman furnace gas valve. 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.

Some gas valves will have a pressure tap on both sides while some only have one on the furnace manifold side. Locate the gas valve. Take out the bolts in the service panel on the side of the furnace using a nut driver. This one covers a simple way to find out if the gas valve is being energized on the newer gas furnaces.

Wait for the unit to cool if it has been in use. Locate the pressure tap on the gas valve and unscrew the plug. Set the thermostat or the device s controller slightly above the current room temperature. This video is part of the heating and cooling series.

Then screw in your manometer. The ratings listed must align with the pressure rating shown on the valve. If this doesn t work read the nameplate mopd rating. Locate the hot surface igniter and look for a spark or glow there.

Turn off the furnace at the wall control. 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. Turn on the furnace and start it.

Unplug the appliance from the wall outlet. Screw back in the gas valve plug using a small amount of pipe dope. A solenoid valve that is filled with drudge might fail to open. Pull the wires off.

Turn the gas off.