Furnace Pilot Light Won T Stay Lit Thermocouple

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.

Furnace pilot light won t stay lit thermocouple.

Valve coil 121 ohms. The procedure for lighting a standing pilot always includes lighting the flame then manually holding in the gas valve to keep the flame burning and give the thermocouple time to heat up. Thermocouple produces 20 mv. 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.

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. Gas water heater pilot wont stay lit even after replacing the thermocouple. Flame on pilot light does not hit thermocouple. If it determines that the pilot light is off it shuts down the flow of gas.

Thermocouples detect pilot lights by sensing the heat they produce. If the pilot light is not aimed correctly simply bend the thermocouple to line it up with the pilot tube. The thermocouple detects the pilot light via sensors. Pilot light won t stay lit after releasing bypass button.

Some common causes include issues with the thermocouple and pilot tube. If your pilot light won t stay lit the thermocouple is very likely the culprit. A faulty thermocouple may arbitrarily determine that the light is off when you want it on and vice versa. 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.

Be sure everything has cooled down before realigning the thermocouple and pilot light. Pilot lit on gas furnace but the burners won t light. If your furnace s pilot light won t stay on the furnace won t work.