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Q: What is the lifespan of a gas furnace thermocouple?
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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.


What is Thermocouple?

In terms of security, the thermocouple is an integral component of the furnace. A little flame that burns continuously is a thermocouple. It is frequently employed in gas furnaces that have standing pilots. In order to maintain a warm tip, the thermocouple's top is placed in the flame. When the pilot flame goes out, the thermocouple automatically shuts off the gas valve in the furnace. Thermocouples are used in everyday good ,electric power generator etc you can avail thermocouple for best price at partshnc website


Would you smell gas if your pilot light on furnace is out?

modern heaters have a thermocouple that would shut off gas supply if the pilot goes out.


Why wont my mobile home furnace Coleman Model7655-856 turn on?

Check the thermocouple, or find a gas tech to do it.


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


What is a furnace thermocouple?

The thermocouple is two dissimilar pieces of metal inside a tiny metal bulb. When heated they then generate a tiny electrical charge that gives a signal to the gas regulator to keep the pilot on.


How do you measure the temperature of a furnace?

You could use a thermocouple.


How do you replace a thermocouple on a gas fireplace?

Is there any video on how to replace a thermocouple on a gas fireplace


You replaced the thermocouple on your furnace but pilot still goes out when button released?

control valvue ( relay ) internal on Gas control valvue is not switching, replace gas control valvue, By:Joe Draw1.com


Your furnace blows but will not fire up?

Gas furnace have several safeties installed for your protection. If for some reason one of these safeties are not opening or closing the furnace will not fire. Most likely the pressure switch, high limit or transformer may be faulty. If it is an older model check the thermocouple.


What is the purpose of the thermocouple?

The thermocouple keeps a gas pilot light burning.


How to clean the pilot on your furnace?

Remove the pilot assembly from the furnace and clean it up. You need to be careful when putting it back on at the gas valve so as not to crossthread the screw. Take a thin wire and clean the pilot orifice, then use a brush or sandpaper on the thermocouple.