Furnace Pilot Light Won T Stay Lit Thermocouple

Troubleshooting this issue may be helpful in determining the source of the problem and helping users identify a potential resolution.

Furnace pilot light won t stay lit thermocouple.

A faulty thermocouple may arbitrarily determine that the light is off when you want it on and vice versa. If it determines that the pilot light is off it shuts down the flow of gas. Thermocouple produces 20 mv. Valve coil 121 ohms.

If the pilot light is not aimed correctly simply bend the thermocouple to line it up with the pilot tube. This pilot light may not always stay lit due to a variety of issues that may affect the gas supply or ignitor. If your furnace s pilot light won t stay on the furnace won t work. Pilot light won t stay lit after releasing bypass button.

If your pilot light won t stay lit the thermocouple is very likely the culprit. When your pilot light will not stay lit for more than a few moments turn the pilot light on and be sure it is aimed at the thermocouple. While this is an excellent safety feature a faulty thermocouple may decide arbitrarily that your pilot light is off when you want it on shutting down your pilot light and your furnace. Be sure everything has cooled down before realigning the thermocouple and pilot light.

Some common causes include issues with the thermocouple and pilot tube. Gas water heater pilot wont stay lit even after replacing the thermocouple. Furnaces of various kinds are gas powered and use a pilot light to supply heat to the unit including standard home furnaces and floor furnaces. The pilot lights but won t stay lit if a water heater pilot won t light at all the thermocouple probably isn t the problem.

The thermocouple detects the pilot light via sensors. When my pilot light wouldn t stay lit on my furnace i asked a few plumber buddies about the symptoms and they both said it was the thermo couple. Pilot lit on gas furnace but the burners won t light.