Gas Water Heater Thermocouple Issues

It is important to make sure that there are no leaks on your water heater after you replace the thermocouple.

Gas water heater thermocouple issues.

Open the gas supply to the unit and light the pilot. If simple relighting or replacing the thermocouple or flame sensor does not restore the water heater to good operation then the problem is more serious and probably requires service from a plumber or appliance technician. Reinstall the access covers and slowly turn up the temperature until the burner is lit. Thermocouples are used as safety devices that will shut off equipment by shutting down the lp or natural gas fuel supply on some gas fired heating equipment such as gas fired furnaces gas fired heating boilers and gas fired water heaters.

Troubleshooting low performance insufficient hot water pilot light problems improper gas combustion issues with the pilot light thermocouple gas burner venting and other common issues. A worn out thermocouple is one of the most common gas water heater problems when thermocouples wear out the pilot light goes out the burner won t light and you will have no hot water. The other less common problem would be the gas valve. Use the dishwashing liquid solution to check the connections around the pilot light and burner.

A thermocouple can be found in diesel engines gas turbines kilns gas water heater temperature sensor in thermostats etc. A gas water heater in boise baton rouge buffalo or boston uses a thermocouple that includes a probe attached to a copper tube that screws into a port on the gas valve. They can prevent power from reaching the pilot light thus the water won t heat up. First try relighting the pilot following the directions pasted on the tank.

The gas water heater thermocouple is the safety element that is designed to inform a gas control valve is the pilot flame on or off and open or close the gas to the main burner. Possible causes include a bad gas control valve or a cracked or damaged burner. If the thermocouple is working you should be able to measure 30 to 40 millivolts of voltage at the connection end of the tube when the pilot flame is on. Corrosion and buildup are some of the things that can affect a thermocouple.

A bad gas valve will not allow any gas to go to the burner or pilot light. The most common problems. 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.