How do I repair a Lennox 12G gas unit that requires several clicks of the electric ignition before it will start?
Model: G12 gas unit with electric ignition
Hi. I'm Joe and I will be glad to help you out.
Is it lighting once the ignition starts clicking and it keeps clicking after that, or does it have to click for a while before it ignights the pilot?
I'mAfter I think
After, I think. I'm at some distance and hear it through the vents.
Ok. I have 2 things for you to try, First is to clean the flame prove sensor at the pilot. It is a steel rod that the pilot flame hits and warms up to let the gas valve know that flame is present and the valve can be turned on. It is on the pilot assembly and you can just clean it with steel wool or emory cloth.
I will try that
If that doesn't solve the problem, then you will need to clean the pilot orfice.
The pilot orfice is hard to clean because the hole in it is so small, so if you have to do this, then I would recommend to buy a new orfice or have a service tech clean the whole system.
Just let me know. Thanks
My reply "I'll try that" came without my thinking through the suggestion. Cleaning "flame prove sensor ... that the pilot flame hits" makes no sense whatsoever when ignition is by electric spark and there is no pilot light involved. "Clean the pilot orfice" might be what's needed. But after being completely off base with the first suggestion, anything subsequent lacks creditability.
I'm sorry. My manual shows a pilot light and a flame sensor, So you have no pilot light on the system?
The model that I show has a pilot light that is ignited by a spark igniter. If that's not what you have, please let me know. Thanks.
Even though it's not a standing pilot that you have to light manually, you should still have a pilot.
Also anytime there is a pilot, there is a flame sensor for it, please let me know if you see this, or if you would like me to opt out so that another expert can take a look at it.
It may help if you supply the model number.Lennox made versions of the G12G12, G12E, G12R and G12RE.If you would like to supply more complete information.However, no matter what unit you have, you indeed have a pilot light with orifice as described by previous expert.It may be lit by spark, but the information is true as given thus far.The information is not off base at all. If you supply a real model number I will supply the original manual for the unit complete with descriptive troubleshooting per the unit you have.This way you will at least gain a basic understanding before refusing information that is in fact true. Once you have the manual you will be able to judge credibility at that time.
Sorry I'm slow in replying, but taking care of an invalid wife while I trying to following your advice. With the back and power off, the first five times I turned the power on it would click once and then nothing, then the next time the pilot lit and it clicked 14 more times and then stoped as the burner ignited.
Do you have the full model number and I can tell you what you need.
I the manual would be much appreciated. Model No. is G1203E-28-4.
Thanks for giving me the opportunity to help! This should be the manual for your unit.
More than 20 years experience.