[jayp603]

Jumped the thermostat, blower doesn't start, no flame, heard a click from the furnace when turning up tstat. Fuse on board was blown, replaced. Followed lighting instructions to no avail. Help please its getting chilly...

[wmproop]

Is it giving a code(flashing light) on the circuit board?, after replacing the fuse does the led light burn at all?

What does the ((3 rev b dead )) mean?, turn off the breaker to furnace for about 5 minutes ,then back on, while you are standing in front of furnace tell all you see and hear

[jayp603]

No action from the furnace except for the humidifier runs.. no lights on the circuit board. Humidifier comes off the bottom door switch, so there must be power, since its running?

[wmproop]

You need to make that dreaded call, the HVAC/R repair professional, seems you don`t have what you need to do it yourself. Its not worth the being without heat for yourself and the family,, sounds like

[jayp603]

If there is no light on the circuit board does that mean the board is fried? I could switch out the board myself, if I can buy one and I can be pretty sure that's it...

[wmproop]

No,, doesn`t especially mean the board is bad. Could just mean there is no power going to the board,, not knowing how old or the model number of your unit,, some don`t even have a light on them,, when looking at the board are you manually pushing in the button that the door usually is keeping pushed in when door is reinstalled

[jayp603]

Mod# gmp075-3
Serial 9909612251

There are lights/leds/lamps on the board, just unlit.
The humidifier is running off the same wire that powers the board from the door switch. Black and white I think...

[wmproop]

Have you checked to see that you have 120 volts of power comeing from door switch and going to board? Have you checked again and sure you haven`t blown another fuse in board? Is there power going into the transformer 120V and 24 volts coming out otherside

[jayp603]

So I called the hvac guy, new board, new transformer, new ignighter, and its blowing fuses, no heat, 450 dollars. Not happy. Did I need all three of these things? Would they all blow at once? Would the bad board take out the transformer? I didn't think the transformer was bad since the thermostat was working. The guy is coming back today, I hope its not going to be more money... why would it be blowing fuses? It blew one when they first fired it up according to my wife, would this be faulty install or a problem with the blower motor? Don't want to buy any unnessacery parts.

[hvac1000]

It sounds like you might have call a service person that has no idea whet they are doing. Looks like to many parts to be replaced at one time especially since it is not working now. Post back and tell us what is the service persons next move. This is interesting.

Owners manual

http://site.famousparts.com/goodman/PDF/IO-137.pdf

[jayp603]

Came back found a short, seems OK now, no extra charge, but think I have more new parts than I really nedded.
Thanks all.

[hvac1000]

As long as it works it OK.

[wmproop]

We call them parts swappers around here,, most anyone can do that if they know the difference between a screwdriver and a pair of pliers. Its also how the professional HVAC techs get a bad name

[jayp603]

So, maybe the tech didn't know what he was doing, mayne he sold me a transformer I didn't need, but he did come back twice and fixed shorts that were blowing the fuse for no charge, as well he should have, I think. So I have heat again. Thanks for the advice and manual. Oh, my fan only goes on when the tstat calls for heat, not from the fan on switch. This is the blue wire fron the thermostat I think? I need to print out the wiring diagram and check this out.
Thanks again.