Gas Water Heater Thermocouple Replacement

The thermocouple has two ends.

Gas water heater thermocouple replacement. If your pilot light won t stay lit the thermocouple probably needs to be replaced. Remove burner assembly. A new one costs about 5 to 10 and is easy to install. Then unfasten the three nuts that hold the thermocouple and the two gas tubes to the valve.

Once the pilot supply tube burner supply tube and thermocouple are disconnected from the gas control valve see above simply lift and remove the burner assembly from the bottom of the water heater. Replacement thermocouples using universal mounting include clips and fittings that will work on most gas fired heaters and water heaters. Make sure that the gas controller is in the off position before attempting this repair. How to replace the thermocouple on a standing pilot water heater.

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 gas water heater thermocouple with video instructions turn off the gas supply to the water heater by using the gas control valve or the main valve. 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. Step 8 reattach the manifold tube pilot tube and thermocouple to the gas control valve thermostat and tighten them using the adjustable wrench.

Then detach the thermocouple from the burner and take it with you to the home center or hardware store to ensure you buy the right replacement. 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. Unfasten the three nuts that hold the thermocouple and the two gas tubes to the valve. For example sid harvey s dyna couple universal mounting thermocouple sold in lengths from 18 to 48 will replace honeywell robertshaw penn baso white rodgers and other thermocouples.