Furnace Pilot Light Won T Stay Lit With New Thermocouple

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. You can test it with a multimeter.

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Be sure everything has cooled down before realigning the thermocouple and pilot light.

Furnace pilot light won t stay lit with new thermocouple.

Thermocouples detect pilot lights by sensing the heat they produce. Cleaning out the pilot orifice means disassembling the pilot and clearing out the debris using a needle or compressed air. If it determines that the pilot light is off it shuts down the flow of gas. Pilot stays lit for two weeks then goes out with the thermocouple brand new.

If the pilot lights but won t stay lit the thermocouple is probably bad. 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. Some common causes include issues with the thermocouple and pilot tube. Make sure that the thermocouple is within the flame of the pilot and then hold the pilot button in for at least one minute maybe two in order for the thermocouple to be warmed up.

If your furnace s pilot light won t stay on the furnace won t work. A faulty thermocouple may arbitrarily determine that the light is off when you want it on and vice versa. Flame on pilot light does not hit thermocouple. 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.

Gas water heater pilot wont stay lit even after replacing the thermocouple. This device generates a small electric signal to keep the gas valve open when the pilot is on. The pilot orifice may be full of dirt. If the pilot light is not aimed correctly simply bend the thermocouple to line it up with the pilot tube.

Pilot light won t stay lit after releasing bypass button. Every gas appliance with a standing pilot that cycles on and off needs a thermocouple. A weaker flame won t envelop the thermocouple properly. Valve coil 121 ohms.

Thermocouple produces 20 mv. The pilot light is supposed to be a strong blue cone not a weak yellow flame.

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