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Defective thermocouple or possibly a dirty or clogged pilot orifice.
Not usually. Probably a bad or dirty thermocouple.
How do I light pilot light on furnace
At pilot light, pilot light flows around thermocouple.
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.
There are a couple common reasons for a pilot light going out. 1. The thermocouple is weak. This is the gold rod that must see the flame in order to keep the gas valve open. it is a safety device that will not let the gas vavle open if there is no pilot. 2. The pilot is dirty and has a yellow flame. If this is the case, it will have to be cleaned. There are books on he market such as forced hot air furnace - troubleshooting and repair that show you how to repair your furnace. You can buy this at amazon.com
No standing pilot, it is a spark ignition unit
If this is happening you need to get your furnace serviced by a qualified engineer.
There are 55,000 BTU in an intertherm furnace pilot light. It is a way of heating up a place.
When pilot light goes out, gas flows out of the pilot light nozzle. If out has continued for a long time, a gas cloud can develop around the furnace. When you go to light the pilot light, you'll ignite this gas cloud and make a big fire ball. If your basement is drafty, you might never get a huge cloud of gas hovering around your furnace. When you notice that your pilot light is out, you should shut off the gas to the furnace and allow any stray gas to dissipate before you turn the gas back on and light the pilot light. alliedallcityinc.com
There are several reasons why a pilot light could be going on. One reason is there could be a light breeze that is extinguishing the flame.
i have a model 125u19 payne furnace i move the thermostat but nothing comes on in the furnace and the pilot light is lit