Gas Water Heater Thermocouple Replacement

Replacement thermocouples using universal mounting include clips and fittings that will work on most gas fired heaters and water heaters.

Gas water heater thermocouple replacement.

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. Then unfasten the three nuts that hold the thermocouple and the two gas tubes to the valve. If your pilot light won t stay lit the thermocouple probably needs to be replaced.

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. Make sure that the gas controller is in the off position before attempting this repair. First shut off the gas valve on the water heater and the gas valve on the gas line near the heater. How to replace the thermocouple on a standing pilot water heater.

Honeywell home cq100a1005 u cq100a1005 replacement thermocouple for gas furnaces boilers and water heaters 36 inch 4 7 out of 5 stars 188 9 79 honeywell cq100a1021 u cq100a1021 replacement thermocouple for gas furnaces boilers and water heaters 18. Remove burner assembly. 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. 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.

Turn off the gas supply. Step 8 reattach the manifold tube pilot tube and thermocouple to the gas control valve thermostat and tighten them using the adjustable wrench. The thermocouple has two ends. A new one costs about 5 to 10 and is easy to install.