Friday, September 26, 2014

Fixing Pilot Light on Furnace (Replacing Thermocouple)

So my heat went out towards the end of winter.  It was blowing cold air and with a little investigation I realized the pilot light is out.  I was like "SWEET!", all I need to do is relight it and we're good to go.  That worked for about a day and I was back up there relighting it (Note: Occasionally this can be the only problem, high winds or other random things can cause the pilot light to be blown out).

I had a guy come look at it and said the whole unit needed to be replaced.  Hard to argue with that since it's like 30 years old, but I wasn't ready to bite off that if I didn't absolutely have to.

With some research, one of the main causes of this is a bad thermocouple.  I don't know a whole lot about HVAC stuff, but I watched a youtube video on how to replace one.  It was probably the easiest DIY project ever.  I bought a 10 dollar replacement part at my local hardware store and BOOM!  Fixed.

Search around youtube and find one that looks similar to yours:

www.youtube.com/watch?v=5j29RILOGOU

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