Yep with a little rubber tube going from it to the vent motor.
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Yep with a little rubber tube going from it to the vent motor.
Ok, did that, turned it back on, and 1st cycle, nothing...
Dang. Didn't work.
Well that puts us back to gas pressure. Or the ignitor. But you say that it is one that goes threw the metal cabnet and can not be moved. And the control board timing. You could try to clean the burner orfice with a small wire on the burner closest to the ignitor.
Ok, I'll try and do that.
And Josh? I really appreciate your trying to help.
A small restriction inside the burner or orifice that set in front of the hot surface ignitor will keep the system from lighting.
Are the orifices inside the holes behind the ports? If so, I can't get to them as there is heavy wire mesh in the holes.
The orfice is the small brass plugs coming out of the main black gas line that sends gas down the metal tubes to the ignitor. They are on the gas manifold
The orifices are in the gas manifold that supplies fuel to the burners.
Ok found them. Gently poked a wire into them and turned the furnace back on. Waiting...
Nada... Guess I'd better get my electric blankets out.
Well the only other thing you could try, sense the tech is coming back tomorrow would be to turn up the gas pressure a bit. The tech thinks the probem is in the board?
I know he did check the gas; he said there is a small burnt spot on the back of the circuit board.
Well I guess you will just have to wait and see what he finds out. Let us know what it turns out being!
I will Josh, and thank you again!
Update: It wasn't the circuit board, and it's still not fixed. However it is back to firing sometimes again, so we do have sporadic heat. Daniel (the tech) adjusted the gas pressure up a bit, and is considering trying a new gas valve on it. However the valve does appear to be working...
The only thing he can find that is a bit off is the amount of air it takes in before it fires. (Or attempts to fire.) He says he hasn't seen one draw as hard as this one does before.
He is stumped, he says there is no reason that he can see that it isn't firing. (He also checked circuit board/pressure switch by bypassing the P/S as KC13 suggested, and that wasn't it either.) He says he will get to the bottom of it if he has to call Goodman to do so.
Go Daniel!
I'll update as we learn more.
Have a great weekend!
Glad you got some heat.
What did he set the gas pressure at?
Not sure, said he bumped it up a little. He is going to swing by tomorrow and bump it up a little more to see if he can keep the dang thing running.
Here is a Goodman factory service manual for your unit.
Your furnace trouble chart starts on page 28
If you have not cleaned the flame sensor do so. Use steel wool or sandpaper. Many times cleaning it will not take on the first try so clean it again to be sure.
If the light is blinking on a continuous basis then you have a case of polarity reversal. Reverse the 24 volt power leeds going to the board. This is a very common problem.
http://www.alpinehomeair.com/related...st.%209.09.pdf
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