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Gas fireplace won't light

Posted on 12/16/17 at 1:56 pm
Posted by SoggyNachos
Dutchtown
Member since Mar 2008
146 posts
Posted on 12/16/17 at 1:56 pm
I'm not sure if this is the right board to post this question, so if not, please direct me elsewhere. My problem is that I can light my pilot light and it will stay lit, but when I flip the wall switch to ignite the fire, I get nothing. There are 3 terminals: TH, TH-TP and TP. I jumped the TH and TH-TP terminals with a paper clip and the fire ignited. My question is, do I have a wall switch/wiring issue or do I have a termopile issue? Or something else completely? TIA.
Posted by Who Me
Ascension
Member since Aug 2011
7090 posts
Posted on 12/16/17 at 2:25 pm to
Before trying anything too complex

Get a spray can air duster. Spray in all the ports.

A little bit of dust will clog them up and keep them from lighting.

I had a similar issue and this was all that was needed.
Posted by NATidefan
Two hours North of Birmingham
Member since Dec 2008
35930 posts
Posted on 12/16/17 at 2:26 pm to
I don't know much about this, but from Google it says if it won't ignite it's one of these parts.

LINK

I'm thinking switch since it did ignite when you touched terminals. Buy I don't know exactly what those terminals do.
This post was edited on 12/16/17 at 2:27 pm
Posted by Marco Esquandolas
Member since Jul 2013
11423 posts
Posted on 12/16/17 at 3:02 pm to
Pour gasoline on the logs, and don't be conservative...then strike a match while standing over it.
Posted by Marco Esquandolas
Member since Jul 2013
11423 posts
Posted on 12/16/17 at 3:03 pm to
...but on a serious note, I have replaced 3 ignition systems in 6 years on mine--they just don't seem to sit well being off for so long.
Posted by MikeBRLA
Baton Rouge
Member since Jun 2005
16448 posts
Posted on 12/16/17 at 6:29 pm to
Has it ever worked? I know mine has a knob with 3 settings: off, pilot and on. Then there is a toggle switch to toggle between just the pilot light and the fire being on. If yours is like mine, you need to make sure the knob is in the “on” position.

Also, with mine the pilot light has to be on for at least 5 minutes before you can turn on the fire. I assume this is because there is a temperature sensor that must heat up to ensure that the pilot light is lit for safety reasons.
Posted by SoggyNachos
Dutchtown
Member since Mar 2008
146 posts
Posted on 12/16/17 at 7:35 pm to
Yes, it has worked. It started working intermittently last year and finally just stopped altogether. I know the knob you're talking about and it is in the "on" position. I haven't waited for 5 minutes after lighting the pilot, but I'm not sure that's the problem considering it worked last year. Again, I'm open to any suggestions at this point, so I will try that and see what happens.
Posted by umop_apisdn
Member since Sep 2017
3673 posts
Posted on 12/16/17 at 9:33 pm to
Probably a stopped up jet.
This post was edited on 12/17/17 at 10:17 am
Posted by Run up middle
DeRidder
Member since Oct 2012
1406 posts
Posted on 12/17/17 at 8:50 pm to
Thermocouple
Posted by BR Tiger
Baton Rouge
Member since Mar 2004
4157 posts
Posted on 12/17/17 at 10:33 pm to
quote:

Thermocouple


Most likely. You can also try cleaning off everything with some fine grit sandpaper. Sometimes they get a little corroded and just need to be cleaned.
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