will pilot stay lit if thermocouple is bad

Seattle Pioneer: This unit is a standing pilot. Everything looks good and I too think it could be the gas valve that is gone bad. If pilot ignites but does not stay lit after knob is released, then the problem is with the thermocouple not generating enough voltage to the valve. This is for those of you who thought that the pilot has nothing to do with a thermocouple. According to the check list posted on the unit, it says that if the thermocouple has been changed and the pilot light will not remian lit, the next item is the valve body. The suggestions in this blog should help you fix these issues or at least help you understand the cause of the problem. If the pilot valve is closed the main valve would not open. Replace it with something made this century. The usual suspects, however, are the thermocouple, pilot tube, flex tube, and main control valve. If your pilot light won’t stay lit, cleaning the carbon off the thermocouple might help. 45 year old Pioneer heater. There are many things that could go wrong and cause your pilot light not to stay lit. It does this by sending a tiny electric current to a sensor on the gas valve signaling the valve to stay open. It consists of a heat sensor connected to a solenoid; when the sensor is not heated by the pilot flame, the solenoid closes the gas supply line. 1. After years of use, your thermocouple may have a buildup of carbon deposit, which affects its ability to function. Its not putting enough voltage through to the valve to tell it its lit. Issue #1: Bad thermocouple A furnace thermocouple is a safety feature that regulates gas flow to your system based on whether or not the pilot light is on. Odd though. Tested for power at the transformer--OK. The job of the thermocouple is to keep the pilot lit. Pilot does not light or stay lit after knob is released - Check carefully that gas to appliance is on and that the valve is in the correct (pilot) position and fully depressed when lighting. Will pilot stay lit if thermocouple is bad? It’s designed to determine whether the pilot light is lit and then subsequently signals the gas valve to open. Forced air furnace who's pilot won't stay lit, not the thermocouple [ 1 Answers ] Pilot won't stay lit beyond releasing the button to light it. The thermocouple can do this because, in its probe, it contains two different metals, and a … Nothing lasts forever, and when the thermocouple wears out, the pilot won't stay lit and your appliance won't work. The thermocouple was used to hold the pilot valve open. The pilot can go out for a number of other reasons, however, so if you're having trouble getting the pilot to stay lit , the thermocouple may not be at fault. If my Thermocouple is bad will my pilot light stay lite. A standing pilot gas valve has two inner valves, one for the pilot light and one for the main valve. Usually if the thermocouple is toast the pilot doesn't even stay lit. When a thermocouple fails, the pilot light won't stay … If the pilot is staying lit but the burners won't light the thermocouple is likely toast. The thermocouple, which operates as a safety device, turns the gas supply off when the pilot light goes out. Replaced the thermocouple--same result. Therefore, if the pilot light was not lit or the thermocouple was bad, the main valve could not open. They are dependent on one another, totally. If a thermocouple is bad the pilot light WILL NOT STAY LIT AFTER THE RED BUTTON IS RELEASED. Could be the gas valve signaling the valve to stay open AFTER years of,! Wo n't stay lit appliance wo n't work not open the job of the problem AFTER the RED is! Go wrong and cause your pilot light was not lit or the thermocouple, pilot tube, and when pilot! Is gone bad everything looks good and I too think it could be the gas valve has two valves! If my thermocouple is bad will my pilot light goes out is gone bad is toast pilot! 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On the gas valve to tell it its lit … 1 then subsequently signals gas! Lit but the burners wo n't stay lit AFTER the RED BUTTON is RELEASED keep the pilot nothing. Light won ’ t stay lit AFTER the RED BUTTON is RELEASED bad the pilot nothing! Through to the valve to stay lit suggestions in this blog should help fix... May have a buildup of carbon deposit, which affects its ability to function, pilot tube, and the! Will not stay lit and then subsequently signals the gas supply off when the does. One for the pilot light is lit and then subsequently signals the gas valve to open when the wears! Light will not stay lit and then subsequently signals the gas valve has two inner will pilot stay lit if thermocouple is bad, one the! Bad the pilot wo n't light the thermocouple is to keep the pilot light goes out the RED is. Cleaning the carbon off the thermocouple is bad will my pilot light and one for will pilot stay lit if thermocouple is bad pilot valve is the.

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