Change Water Heater Thermocouple

After decades of use your water heater s thermocouple can become decalibrated.

Change water heater thermocouple. Spare pilot water heater replacement thermocouple for old water heaters with foot indicators it is very simple to disassemble and replace the thermocouple. 1 cause of pilot lights that won t stay lit is a worn out. Check out the video below which shows you how to replace your thermocouple. The thermocouple is a thermoelectric device that shuts off the gas if the pilot light goes out.

When the junction is heated the thermocouple produces a small electric current which controls the flow of gas from the gas supply valve. Once the pilot feed pipes burner feed pipes and thermocouple are disconnected from the gas control valve simply lift the burner assembly from the bottom of the water heater and remove it. If you have a gas water heater with a pilot light that won t stay lit it s probably due to a failed thermocouple. Re light the pilot according to the instructions printed on it and set the temperature control valve to the desired temperature.

Remove the burner assembly and detach the thermocouple. By james carey morris carey. If the flame is out the thermocouple will prevent the valve from delivering gas to the burner. Apply soapy water around the three fittings looking for bubbles that indicate a gas leak.

Learn how to replace this inexpensive part and keep your hot water heater working for years to come. The thermocouple is part of the pilot burner assembly and connects to the gas control valve on the outside of the water heater. A hot water heater that doesn t heat might just need a new thermocouple.