Testing Furnace Gas Valve

This one covers a simple way to find out if the gas valve is being energized on the newer gas furnaces.

Testing furnace gas valve. Locate the gas valve. Pull the wires off. Turn on the furnace and start it. Locate the pressure tap on the gas valve and unscrew the plug.

Screw back in the gas valve plug using a small amount of pipe dope. Turn off the gas feed line valve to the dryer. The manometer will give the reading in water column in inches. There should not be a flame up there if the valve is working correctly.

Wait for the unit to cool if it has been in use. How to check the furnace gas valve with a multimeter step 1. Turn off the furnace at the wall control. Then screw in your manometer.

Lastly a low voltage can be the problem for its failure to open. Great video troubleshooting this goodman furnace gas valve. Locate the front lower access panel to the appliance. Turn off the gas supply valve to your appliance to test whether your valve is capable of shutting down properly.

Turn the gas off. If this doesn t work read the nameplate mopd rating. Set the thermostat or the device s controller slightly above the current room temperature. Unplug the appliance from the wall outlet.

Disassemble the valve and clean it out with a brush or rag. Take out the bolts in the service panel on the side of the furnace using a nut driver. If playback doesn t begin shortly try restarting your device. This video is part of the heating and cooling series.

Turn the gas back on. A simple measurement will tell you if your valve is bad or another part keeping voltage from the. Some gas valves will have a pressure tap on both sides while some only have one on the furnace manifold side. Videos you watch may be added to the tv s watch history and influence tv recommendations.

A solenoid valve that is filled with drudge might fail to open.