Step 8 reattach the manifold tube pilot tube and thermocouple to the gas control valve thermostat and tighten them using the adjustable wrench.
Replacing thermocouple in hot water heater.
Raise the temperature setting on the thermostat.
In simple terms it s a short piece of tubing that runs from the gas controller to the pilot.
Inside the burner compartment of your gas water heater right in front of the pilot light is a small metal cylinder called a thermocouple.
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.
The thermocouple is a heat sensitive.
When the pilot light on a gas water heater won t stay lit the problem is usually a faulty thermocouple.
Since almost all major brands of atmospherically vented water heaters have switched from a thermocouple to a t.
Insulate the hot water pipes.
Before you replace a broken hot water heater check to make sure the thermocouple still works.
Check the following when your water is not hot enough.
By james carey morris carey.
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.
It s a simple inexpensive repair that could save you a bundle.
How to replace a thermopile on a water heater.
1 cause of pilot lights that won t stay lit is a worn out.
Remove the burner assembly and detach the thermocouple.
The thermocouple is a thermoelectric device that shuts off the gas if the pilot light goes out.
The thermocouple and pilot light tubes both extend from the gas control valve to the burning compartment.
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.
Flush the heater to remove sediment from the tank.
Replace the heating element or thermostat.
A hot water heater that doesn t heat might just need a new thermocouple.
Make sure that the power is connected.