How to check voltage on furnace gas valve. This one shows how to do a voltmeter check of the gas valve.

How to check voltage on furnace gas valve. When the valve isn’t getting 24 volts, the furnace won’t light, leaving a cold home. Always follow safety precautions. This one shows how to do a voltmeter check of the gas valve. Jul 15, 2025 · How the Furnace Gas Valve Works and the Role of 24 Volts The furnace gas valve is an essential safety and operational component controlling the flow of gas to the burners. Oct 20, 2011 · Locate the gas valve, which is typically near the bottom of the unit, positioned next to the pilot light. . In most residential heating systems, the valve requires a 24-volt signal from the thermostat and control circuitry to open and allow gas to ignite. This guide explains why a gas valve may lose voltage, how to diagnose safely, and which steps restore operation or indicate a professional assessment. The furnace gas valve must receive a reliable 24-volt control signal to open and allow gas to flow for ignition. This low-voltage signal energizes the valve’s electromagnetic coil Feb 15, 2025 · Voltage test: You can use the multimeter to check the voltage at the gas valve terminals. This video is part of the heating and cooling series of training videos made to accompany my we Can anyone tell me the proper way to check gas valve voltage? I'm thinking I should be checking continuity (ohms) by touching the gas valve terminals with the multimeter test leads (red test lead to red terminal, black lead to blue terminal) and the multimeter set the Ohms. Look for the two wires clipped to the solenoid terminals on the top or side of the gas valve. It covers typical residential 24V control Oct 24, 2024 · To check your furnace gas valve, turn off the power to the furnace, locate the valve, and use a digital multimeter to test voltage, resistance, and continuity. This will help determine if the control board is sending the correct signal to the valve. lykjgc zmsec ffxrexmn lfrqsys hbdb uech ofjfeeb ovwknr lpnekh sscpr