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Hi, I'm Tim and I'm an HVAC expert here to assist you with your questions. Please provide all information I request as it makes it more difficult to troubleshoot something when I'm not there onsite. Essentially, you become my eyes and ears. Thanks for the opportunity to help. At the end of our dialog, you will have a chance to rate my service, but please wait until we are finished and you're satisfied you have all the information you need. Please be patient as many times we work with several customers at once.
Can I get full model number of the unit? This will be found inside the door on a tag.
THis will most likely be an open high limit switch, more than likely caused by the plugged filter.
No, because the furnace probably got too hot, there is an over temperature switch that is probably open (electrically) and will need replacement.
Looks like this. This one cannot be reset. It should reset itself when furnace cools down. If not, will need replacement.
Part # *****
Are your burners at the very top of furnace?
Although this is not the actual switch you need, here's what it looks like from the front view which is what you will see.
That's a downflow
Hang on, I'm running that number/
That's it, but not the right part in there.
Turn furnace power off, take the two leads off that switch, tie the metal ends together and power back on. If the flash code goes away, that is your issue.
Take a paperclip. This is low voltage. Just don't touch the metal paperclip on anything.
Sure it's making connection? In there securely?
OK, put those leads back.
Look for a part that looks like this. Perhaps on inducer motor. Press the red button in the center.
send a pic?
Where is that located?
Can you find your inducer motor? Is there one on there?
Is there a small disk shaped device with red reset?
Parts list shows a limit inducer
Can't find a good picture of it. Besides the one above your burners, look for any disc shaped device with a red reset.
Look for a part that looks like this. Says its on the inducer.
Follow any wires that go in and around the inducer. Other then the actual wires that power inducer motor.
That's it. Now do the same thing that you did with the other one. Turn power off, tie wires together, power back on.
OK, in that case you may have a bad board. We've checked all the over temperature switches. Unless there's one down in the blower area.
Probably a bad board, then. Or a short in the wiring between switches and board.
Did you search for a part that looks like this?
Do this if you will. A picture's worth a thousand words. If you can, take a bunch of pictures from out a ways and then close in of inside of furnace, blower, inducer, etc. So I can get a feel if we've missed anything.
If you would rather just call a technician, let me know and we can close question out.
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