Gas Hot Water Heater Thermocouple Replacement

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Gas hot water heater thermocouple replacement.

By james carey morris carey. 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. Learn how to replace this inexpensive part and keep your hot water heater working for years to come. Spare pilot water heater replacement thermocouple for old water heaters with foot indicators it is very simple to disassemble and replace the thermocouple.

The thermocouple and pilot light tubes both extend from the gas control valve to the burning compartment. A thermocouple or flame sensor is a device used to control gas flow in gas water heaters on older style heaters with standing pilot lights the device is typically called a thermocouple while on newer units with electronic ignition the same or virtually the same device is called a flame sensor for our purposes we ll refer to both devices as the thermocouple. 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. In simple terms it s a short piece of tubing that runs from the gas controller to the pilot.

Step 8 reattach the manifold tube pilot tube and thermocouple to the gas control valve thermostat and tighten them using the adjustable wrench. If you have a gas water heater with a pilot light that won t stay lit it s probably due to a failed thermocouple. A hot water heater that doesn t heat might just need a new thermocouple. Replace the two piece wire connector onto the thermocouple and igniter wire securing it with the retainer clip and slide the manifold burner assembly back into the water heater.

The thermocouple is a special sensing tube on gas water heaters that senses when the pilot light has flame and shuts off the gas to the unit when the pilot has been extinguished. Example tank is a bradford white. 1 cause of pilot lights that won t stay lit is a worn out. Remove the burner assembly and detach the thermocouple.

How to replace a thermocouple on a water heater. Type k chromel alumel are the most widely used general purpose thermocouple 200 c to 1350 c 330 f to 2460 f. The thermocouple is a thermoelectric device that shuts off the gas if the pilot light goes out.