Water Heater Gas Control Valve Troubleshooting

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Water heater gas control valve troubleshooting.

Shut off the water supply to the water heater if necessary by closing the shutoff valve on the cold water pipe coming into the top of the heater tank. Secure the water supply to the heater and drain the heater. Turn off the gas supply by turning the gas pilot control valve to the pilot setting on the water s gas valve. Continue reading below our video of the day.

If problem persist you will need to replace the thermopile. If you don t have 24 vac at the gas valve terminals check for continuity across all the safety devices in the control circuit of the boiler or furnace as it s likely one of the safety devices is interrupting the circuit to the main valve. Unfortunately gas control valves can fail ad leave your water heater useless. If so and the boiler or furnace isn t firing up then you need a new gas valve.

Check all wiring connections. Troubleshooting the gas control valve will help you determine whether the valve is faulty or whether there is a problem with the thermostat heat limiter the pilot or even the gas burner. Make sure that the pilot control valve of the heater is turned off before you start repairing. Use soapy water to check for leaks.

A stuck valve could release gas into the air without regulation or the valve could cause the unit not to fire up at all. Do not turn off the water unless the water heater s power and gas are turned off. Turn the shut off valve on the gas line to the on position parallel with the gas line. Often blamed on sediment in the tank the 4 flashes is one of the most common problems with the honeywell gas valve.

Because gas is involved problems with gas valves are a major safety concern. Proper gas valve adjustment can save your home from a devastating fire. Never use a lighter or any kind of flame to check for gas leaks. A gas control valve is one of the most important parts on a gas water heater.

4 replace gas valve if the temperature has exceeded the limit the gas valve will need to be replaced. So we all can see what it is made of inside i do not recommend you try to rebuild. Before you determine that the gas control valve is faulty check the other components. A bad gas valve in a honeywell appliance such as a water heater or furnace that is powered by natural gas can go bad and affect the performance of the unit.

2 replace pilot assembly insufficient power to the gas control valve thermostat. Always refer to the user manual for troubleshooting tips it can solve the problem more often than not. Before you start any kind of troubleshooting you should make sure the power to the heater is turned off. When replacing the thermopile you must replace the entire pilot assembly.

Turn the gas valve to the pilot setting and shut off the water to the heater.