How To Change Thermocouple On Gas Hot Water Heater

Insert the probe of a new thermocouple into the fitting and adjust it so that it sits 1 8 to.

How to change thermocouple on gas hot water heater.

Since almost all major brands of atmospherically vented water heaters have switched from a thermocouple to a t. Insert the new thermocouple into the bracket from which you removed it until it is fully seated or clicks into place. It is very sensitive. Position the thermocouple tip so that the pilot flame will envelop the top 3 8 to 1 2 inch of the thermocouple tip.

Use the old thermocouple to purchase a new one. Unclip the thermocouple tube and pull the probe out of the fitting that holds it next to the pilot tube. Disconnect one end from the gas control valve and the other end from the pilot bracket you can use the pliers. Slide the thermocouple out of position.

Then unfasten the three nuts that hold the thermocouple and the two gas tubes to the valve. Apply soapy water around the three fittings looking for bubbles that indicate a gas leak. Take the old thermocouple to the hardware home improvement or plumbing supply store to buy an exact replacement. Re light the pilot according to the instructions printed on it and set the temperature control valve to the desired temperature.

Use wrenches or screwdrivers depending on which you need to loosen the nuts and screws on both ends that connect the thermocouple to the water heater. Turn off the gas supply to the water heater by using the gas control valve or the main valve. Turn the gas on leading to the water heater. Attach the end of the new thermocouple into the pilot assembly and reattach the thermocouple to the pilot gas supply using the clips previously removed reinstall the burner and using a small open end or adjustable wrench reconnect the thermocouple lead the gas tube to the main burner and the pilot gas tube to the valve.

First shut off the gas valve on the water heater and the gas valve on the gas line near the heater. How to replace a thermopile on a water heater. Check out the video below which shows you how to replace your thermocouple. This will disconnect it on both ends.

The thermocouple has two ends.