Can a thermocouple be replaced on a furnace?
I suspected the thermocouple and replaced it, but this didn’t fix the problem. I’ve used this furnace for over 15 years without replacing the thermocouple. Can someone recommend the next best course of action to keep my pilot lit?
What does it mean when the thermocouple won’t heat up?
Thermocouple Problems. If the pilot won’t stay on no matter how long you hold in the control button, it means either the thermocouple isn’t getting hot enough or it’s faulty. The reason that it doesn’t heat up enough is either because it’s too far from the pilot or the pilot flame isn’t big enough.
What happens after a plumber replaces a control valve?
After the plumber replaced the control valve then it stays lit. You will have to order the control valve from the manufacturer. Highly active question. Earn 10 reputation in order to answer this question.
What should the thermocouple be in front of the pilot?
When you replace the assembly, the thermocouple should be about one inch in front of the pilot orifice. The pilot flame needs air to burn, but too much air will blow it out. It’s possible for a draft coming from under a door or through an open window to prevent you from lighting it.
How to troubleshoot gas valve with thermocouple?
Troubleshooting: Most problems with this type of valve are due to thermocouple problems. Check the following: 1. Connection from the thermocouple to the valve. Clean the threads of the connecting nut with a pencil eraser and re-tighten. 2. Pilot hood and flame direction.
Can a faulty thermocouple cause a water heater to go out?
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. Here are a few ways to pinpoint a faulty thermocouple as the culprit. The Pilot Lights But Won’t Stay Lit If a water heater pilot won’t light at all,…
What happens when a gas thermocouple is broken?
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. When a thermocouple fails, the pilot light won’t stay lighted. A burned out or broken thermocouple should be replaced.
Can a thermocouple go out when the pilot is on?
Nothing lasts forever, and when the thermocouple wears out, the pilot won’t stay lit and your appliance won’t work. 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.
What kind of thermocouple does furnace pilot use?
The new thermocouple is a cheap “universal” thermocouple that I purchased from Amazon and it doesn’t seem to sit in place tight but I don’t think it’s moving. There seems to be a secondary thermocouple-type wire running alongside the thermocouple and pilot gas line, though I ensured the thermocouple is not in contact with anything else.
How old is the furnace pilot in my house?
The furnace is definitely over 30 years old and was likely installed in the 60’s. If their is a good flame on the thermocouple then it is a bad gas valve. Sometimes if the gas valve is just barely bad a hotter thermocouple will work for a short time but finding a hotter thermocouple is just hit and miss.
What’s the yellow flame on my furnace pilot?
There seems to be a secondary thermocouple-type wire running alongside the thermocouple and pilot gas line, though I ensured the thermocouple is not in contact with anything else. While holding the pilot light button down I get a blue flame with a yellow tip that’s over an inch in length.
I suspected the thermocouple and replaced it, but this didn’t fix the problem. I’ve used this furnace for over 15 years without replacing the thermocouple. Can someone recommend the next best course of action to keep my pilot lit?
The new thermocouple is a cheap “universal” thermocouple that I purchased from Amazon and it doesn’t seem to sit in place tight but I don’t think it’s moving. There seems to be a secondary thermocouple-type wire running alongside the thermocouple and pilot gas line, though I ensured the thermocouple is not in contact with anything else.
The furnace is definitely over 30 years old and was likely installed in the 60’s. If their is a good flame on the thermocouple then it is a bad gas valve. Sometimes if the gas valve is just barely bad a hotter thermocouple will work for a short time but finding a hotter thermocouple is just hit and miss.
Why does my furnace pilot not stay lit?
The pilot won’t stay lit on my furnace, when I release the button it just goes out. This started occurring after I did some gas plumbing and had to relight the pilot. I suspected the thermocouple and replaced it, but this didn’t fix the problem.
