How to replace thermocouple on gas fireplace. The new t couple should be installed onto the pilot assembly as the old one was installed. Pull the entire thermocouple out of the heat glo fireplace. To replace a gas fireplace thermocouple shut off the gas and electricity remove the access panel disconnect the pilot gas tube and then remove and replace the thermocouple.
Once the nut is loose pull the end of the thermocouple through the mounting plate. First check to see if your pilot light is lit. Turn the nut on the bottom of the pilot assembly plate securing the thermocouple with the wrench.
Give the thermocouple about 15 minutes to heat up and then turn on the flame to make sure it all stays functioning. So hire an expert if youre not comfortable doing any of this in a safe manner. Turn the gas back on and relight the pilot light.
The thermocouple on your gas furnace is a heat sensitive device that transmits a small electrical signal to the gas valve to keep it open when the pilot is on. To replace a gas fireplace thermocouple take measurements of the removed part or carry the old part to store so that the replacement is the right size. My gas fireplace wont light.
Locate the gas valve its usually behind a grill on the front of the fireplace and find the copper thermocouple wire leading from it. With gas and flames involved things can get dangerous as in blow your house up dangerous.