Home furnace problems

[bhowes]

So does it glow or tic the igniter

 

[Jake jenkins]

It glows

 

[bhowes]

If it glows flame rod is part of the igniter if it tics it will have second and independate flame rod could be at the opposite end of the burner this process is call flame rectification this is what keeps you safe

 

[bhowes]

Ok so step 3 when the igniter glows does it establish a pilot flame or does it just light the burner

 

[Jake jenkins]

So all that bein said what's wrong with my furnace lol what can I try next ? Motherboard ? Ground maybe ?

 

[bhowes]

Patience we are trying to find your problem see question above

 

[Jake jenkins]

It establish a flame but only for a short time like 3 seconds then fan kicks in and flame shuts down

 

[mach123]

Patience we are trying to find your problem see question above

Good diagnose and should be an easy fix
All should listen and learn, or just change out furnace lol

 

[bhowes]

Ok maybe I'm being clear does it establish a little pilot flame or do all the burners light up when you say fan starts and it goes out which fan blower fan or venter fan ( little one on venting system)

goin for a smoke back in 5

 

[Jake jenkins]

I think it's got a little pilot flame yes for a very short time then the blower fan kicks in and then the flame goes out

 

[bhowes]

Good now we are getting somewhere
so furnace prob has 2 brains
A main mother board and an ignition module.
the main board sounds like it probably ok but you could have a problem with ignition module
did you replace igniter and if so did you touch it with your bare fingers ?????

 

[Jake jenkins]

Replaced it yes but never touched it ( so called trained professional changed it but I watched him and he didn't touch it. )

 

[bhowes]

Bye the way guys my rep meter should be going off the scale by now

 

[Jake jenkins]

I appreciate you helping me out , the 3 different people that came to try and fix it gave up and I'm out a grand lol I don't mind paying for a job but paying for nothing bothers me lol

 

[bhowes]

Good because oil in your skin can foul that thing just like a halogen bulb
so as stated this system is called flame rectification and that happens through the ignition module it changes an a/c into a d/c and back into a/c through the pilot flame and this happens in a split second it will be a grey or white box about 2&1/2 times bigger than a deck of cards and will have 6 to 10 wires running to it you will recognize it by what's marked where the wires go

it will marks like 24 v , 24 v grd ,th,tr, brn grd
also marks like MV,PV,

 

[Jake jenkins]

Here's what my igniter looks like

 

[Jake jenkins]

I'm actually at work right now won't be able to check that til I get home

 

[bhowes]

This device sends the signals to the gas valve and tells the burner to come after the pilot is established

 

[bhowes]

That's ok you will be the smartest customer the right service tech has ever come across

 

[Jake jenkins]

So if I find that box it's possible that's the problem ? Where would I get one of those ( what store )