Although thermocouples can last for several years, they generally don’t last as long as the furnace. It’s time to replace the thermocouple if the main oven won’t stay on. Most home improvement and hardware stores stock replacement parts.
When should a thermocouple be replaced?
A working thermocouple will show a value between 25 and 30 millimeters. If the reading is less than 25 millimeters, it must be replaced.
How do I know if my thermocouple on my gas fireplace is bad?
The solution: The pilot light of the gas fireplace does not light up. So you’ve checked and even reset your pilot light, but it’s still not lit. This may indicate that your fireplace’s thermocouple is defective or worn out.
What Are the Symptoms of a Bad Thermocouple?
If you cannot light the flame at all and are sure the gas is on, the pilot tube is probably clogged. If the flame goes on and off when you release the gas control knob after holding it for the recommended 20-30 seconds, this is a sign of a thermocouple malfunction
How much does it cost to replace a thermocouple on a gas fireplace?
If you need to repair your night light, most professionals will complete the repair for around $150 on average. If you’re replacing a thermocouple or thermopile with the help of a professional, you can expect to pay anywhere from $150 to $250
Can you clean a gas fireplace thermocouple?
A dirty thermocouple can affect the ability of the gas fireplace to ignite. … Cleaning the thermocouple is a fairly simple process, but should only be done when the fireplace is off and completely cold. Note that only adults should perform this task to reduce the risk of possible injury.
Will a pilot stay lit with a bad thermocouple?
A thermocouple senses the heat of the pilot flame and allows gas to flow to the burner. A bad thermocouple will cut off gas flow to the pilot and burner, leaving the pilot unlit.
What happens when a thermocouple turns off?
If the device is equipped with a thermocouple, the problem may be a defective thermocouple. The thermocouple, which acts as a safety device, shuts off the gas supply when the pilot flame goes out. … If a thermocouple fails, the indicator lamp will not remain lit. A blown or defective thermocouple must be replaced.
Can you fix a faulty thermocouple?
Thermocouples were designed to detect heat loss from the pilot lights and close the gas valve to prevent gas leakage. Replacing a thermocouple is a relatively easy fix that can take less than two hours.
How do I replace a thermocouple on a gas fireplace?
The only tool you need to replace a thermocouple is a wrench. Turn off the gas supply at the gas tap. Use the wrench to loosen the connector that attaches the thermocouple to the gas valve, then unclip the probe from its clamp and remove the thermocouple assembly.
How do I know if my thermocouple on my gas fireplace is bad?
The solution: The pilot light of the gas fireplace does not light up. So you’ve checked and even reset your pilot light, but it’s still not lit. This may indicate that your fireplace’s thermocouple is defective or worn out.
How long does a thermocouple last on a gas fireplace?
ten years The thermocouple usually lasts ten years. However, in the event of a malfunction, the pilot flame will not ignite and the fireplace will not work. Therefore, a thermocouple is a crucial component in the operation of a fireplace.
How much does it cost to replace an oven thermocouple?
Cost of Replacing a Thermocouple on a Furnace Replacing a thermocouple costs between $150 and $250, primarily due to labor. On older models without an igniter, it will verify that your pilot light is on. If not, it shuts off the gas.