|
Heat I Need Heat
If you do not have a pc board with diagnostic codes you should have a sequence of operation on the wiring diagram but if not I need to know what you're seeing.
Does the furnace start at all or does it just sit there? What kind of ignition (spark or hot surface)? Does it have a draft inducer ( a small fan motor in front of furnace creating draft to get combustion product out of furnace) or is it natural draft?
If it has a draft inducer and it does nothing after a call for heat then it may be a pressure switch it could be the switch bad or the fan bad. If this is a 90% furnace I have a hard time believing it has no pc board I would look again is it possible that it is not a plus 90
As you can see it could be alot of things so we need more info, let me know
__________________
Beer is not just for breakfast anymore...
Last edited by mike n : 02-21-2008 at 09:05 PM.
|