Hot Water Heater Gas Valve Troubleshooting

For electric hot water heaters start troubleshooting with a quick reset.

Hot water heater gas valve troubleshooting.

This is done at the shut off valve that is in the gas line. A bad gas valve will not allow any gas to go to the burner or pilot light. Set the thermostat or the device s controller slightly above the current room temperature. Locate the hot surface igniter and look for a spark or glow there.

When you see water that appears to be leaking from the bottom of a gas water heater it could be because of condensation try turning up the thermostat a leaking or loose drain valve or the t p valve draining some water through the overflow pipe due to tank overpressurization. Turn off the water heater for a few minutes and then turn it back on. If you don t get a spark your system could have an electrode that is bent or carbon grounding. It could be the gas pilot valve.

The pilot is the most common reason for a lack of hot water. If the pilot isn t the issue then replacing the gas valve should correct the problem. Gas hot water heater troubleshooting usually leads you to the thermocouple. Before you determine that the gas control valve is faulty check the other components.

If the valve is the cause then a professional will likely need to repair this. You may find that getting an exact match to the one you have difficult. There should not be a flame up there if the valve is working correctly. Before you can replace your water heater gas valve you need to purchase a new one.

Shutting off the gas. If the valve is working hot water shouldn t be an issue. The first thing you need to do is shut off the gas to the hot water tank. How to diagnose and repair a faulty atmospherically vented gas fired water heater.

Do not turn off the water unless the water heater s power and gas are turned off. Again easy fix quick solution. The gas pilot valve is the piece that supplies fire to the gas. The last step of the rv water heater troubleshooting process is to turn off the lp system to check for a spark.

Sometimes the thermocouple just needs an adjustment so that the tip lines back up with pilot light flame. The thermocouple is a safety device that stops gas flow when the pilot light goes out. Turn off the gas supply by turning the gas pilot control valve to the pilot setting on the water s gas valve. Okay but what if you get through each of these steps and still can t figure out what s wrong.

Go to the article gas water heater thermocouple issues for information on this common repair. 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. 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. Common problems and how to fix them.