Go to the article gas water heater thermocouple issues for information on this common repair.
Hot water heater gas valve troubleshooting.
Do not turn off the water unless the water heater s power and gas are turned off.
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.
The last step of the rv water heater troubleshooting process is to turn off the lp system to check for a spark.
You may find that getting an exact match to the one you have difficult.
Again easy fix quick solution.
If the valve is the cause then a professional will likely need to repair this.
Example tank is a john wood 40 gallo.
Turn off the gas supply by turning the gas pilot control valve to the pilot setting on the water s gas valve.
The thermocouple is a safety device that stops gas flow when the pilot light goes out.
If the pilot isn t the issue then replacing the gas valve should correct the problem.
There should not be a flame up there if the valve is working correctly.
This is done at the shut off valve that is in the gas line.
Sometimes the thermocouple just needs an adjustment so that the tip lines back up with pilot light flame.
How to diagnose and repair a faulty atmospherically vented gas fired water heater.
It could be the gas pilot valve.
Turn off the gas supply valve to your appliance to test whether your valve is capable of shutting down properly.
If the valve is working hot water shouldn t be an issue.
For electric hot water heaters start troubleshooting with a quick reset.
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.
Before you can replace your water heater gas valve you need to purchase a new one.
Gas hot water heater troubleshooting usually leads you to the thermocouple.
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.
Common problems and how to fix them.
The other less common problem would be the gas valve.
Before you determine that the gas control valve is faulty check the other components.
The gas pilot valve is the piece that supplies fire to the gas.
Shutting off the gas.
The pilot is the most common reason for a lack of hot water.
Okay but what if you get through each of these steps and still can t figure out what s wrong.
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.