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A thermocouple pilot light works by generating a small electric current when heated by the pilot flame in a gas appliance. This current keeps a valve open to allow gas to flow, maintaining the pilot light. If the pilot light goes out, the thermocouple cools down, causing the valve to close and prevent gas leaks.
What else can I help you with?
Would a pilot light on a gas furnace still work with a defective thermocouple?
Pilot light would work but the main burner would not as the thermocouple proves that there is a pilot light to fire. The main gas valve would not open
New thermocouple pilot still going out why?
Control valves do go bad, but not that often. The tip of the thermocouple is in the flame? Holding the pilot button down long enough for it to heat? Sometimes the first time you light it, it takes a little longer for the thermocouple to work. Good clean connection on the valve end of the thermocouple? That's all I can come up with at the moment.
How do you replace a thermocouple on a hot water heater?
The thermocouple is the small tube that runs between the pilot light and the control valve. The valve end unscrews and the pilot light end in held in place with a spring clip that the tip pushes through. Unscrew the valve end and work the pilot end out by twisting it and pulling it out of the clip. Install a new one making sure the end is in the pilot flame and light the heater. No gas will come out when you take it loose from the control valve.
How does a thermocouple work in a water heater?
A thermocouple is a safety device that when heated by the pilot light produces a small electoral current that holds the gas valve (to the pilot) open. Should for any reason the pilot light go out, gust of wind, service interruption , water splash....whatever. The thermocouple will cool off, stop producing current and the gas valve will close. For example, your water heater is in your basement. A strong wind blows down the stairs and blows out the pilot. Or a few inch's of water flood you basement over topping the pilot. With nothing to stop the flow of gas to the pilot light pan, gas would continue to flow unburned in to the room. Then any ignition source could cause a catastrophic explosion.
How does a thermocouple work on a gas boiler?
A Thermocouple is simply a temperature-sensor consisting of a junction between two metals, where the tiny voltage between them varies with temperature. This change in voltage can be detected and acted upon by the electronics controlling such things as boilers.
Why would home heater not work?
If it is gas, the most common problem is the thermocouple. This is what keep the gas valve open. It is a small silver looking wire, 1/8 of an inch diameter that runs from the gas valve to the pilot light. The pilot flame should touch the end of the thermocouple. Of course it can be a lot of things. Power, there can be a fuse at the furnace that may have blown. There will be a box with a light switch and a screw in fuse. The switch may have been thrown.
Explain how a thermo couple divice work?
A thermocouple (or thermal couple) uses a principal called the Seebeck effect, where a voltage is generated in a conductor due to a temperature difference. Different metals generate different voltages, so by combining two different metals in the thermocouple, a voltage difference is generated between the leads of the thermocouple, proportional to the temperature difference. An example of one practical use of thermocouples is in controlling gas pilot lights: A "thermal couple" ( or "thermal coupling" ) is used to sustain a "pilot light" on a gas appliance e.g. a hot water boiler. The thermal couple is heated at one end by the pilot light and generates a small electrical charge that is passed down an internal copper filament to a valve in the gas supply. The valve remains open as long as the electrical current is present in order to supply gas to the pilot light. If the pilot light goes out or the thermal couple fails, the valve shuts off the gas. When you first light a pilot light, the thermal couple is usually heated by opening the gas supply by manually pressing a button and the gas ignited by means of say, a match. You maintain the gas supply by holding the button until the thermal couple heats up enough to generate the electrical charge that keeps the gas supply valve open to the pilot light.
Why does your thermocouple keep going out?
If the pilot flame is too high a thermocouples life could be shortened. Check the specs of the unit supplied by the gas valve for the working pilot pressure. Or put the gas valve in pilot and depress the pilot push button. Keep the button down with a small screwdriver, remove the thermocouple from the gas valve and check the millivolts on the thermocouple. Place one lead on the copper tubing and the other lead on the end of the thermocouple, the silver looking part that touches the inside of the gas valve. With the pilot flame on you should read anywhere from 22-29 millivolts. Anything below that is a sign that your thermocouple is failing. It might work for awhile, but it will probably go out in the middle of a long cold winter night. ;)
Why does gas water heater blows out?
check vent cap and that the closet does not "seal", smothering the pilot, then check that the pilot is a good size when on, if not adjust it. if that dont work try replacing the thermocouple, it is what allows the valve to operate as long as the pilot is on.
How do you know if the thermo coupling on your gas furnace is bad?
The thermocouple tells the gas valve to supply gas to the burners. If the thermocouple is bad then the furnace will not work or the pilot will not stay lit. A properly working one will have a reading of at least 12 milliamps.
Why arent homes wired in series?
If a home were wired in series, every light and appliance would have to be turned on in order for any light or appliance to work.Because people dont like it
Why doesn't the GE appliance light bulb work in your refrigerator?
There are 3 possible reasons as to why the light bulbs do not work in your refrigerator.Light bulb is blownFaulty door switchesFaulty light bulb fittings
