Gas Furnace won't turn on and smells like burnt rubber

02-05-2011, 08:02 PM	#1
Jersey Pete Newbie   Join Date: Feb 2011 Posts: 9	Gas Furnace won't turn on and smells like burnt rubber The blower will go on if I switch it to on, if I put it on automatic it will sometimes make a loud humming noise for up to ten minutes before turning on. It also smells like something is burning. If more info is needed please ask. Thank you.

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02-05-2011, 09:44 PM	#2
handy man88 Member   Join Date: Jan 2007 Posts: 1,733	Gas Furnace won't turn on and smells like burnt rubber Quote: Originally Posted by Jersey Pete The blower will go on if I switch it to on, if I put it on automatic it will sometimes make a loud humming noise for up to ten minutes before turning on. It also smells like something is burning. If more info is needed please ask. Thank you. Is something hung up?

02-06-2011, 03:18 AM	#3
hvaclover Member     Join Date: Oct 2008 Location: Suburbs of Detroit Mi Posts: 3,702	Gas Furnace won't turn on and smells like burnt rubber First thing that comes to mind is that the blower is going or the second one is a weak motor capacitor. __________________ Just slow, not stupid. Last edited by hvaclover; 02-06-2011 at 01:21 PM.

02-06-2011, 08:40 AM	#4
Jersey Pete Newbie   Join Date: Feb 2011 Posts: 9	Gas Furnace won't turn on and smells like burnt rubber Quote: Originally Posted by [LEFT hvaclover[/LEFT];585597]First thing that comes to mind is that the blower is going or the second on is a weak motor capacitor. I replaced the capacitor and still have the same problem. Isn't there a way to oil the blower?

02-06-2011, 08:40 AM	#5
Jersey Pete Newbie   Join Date: Feb 2011 Posts: 9	Gas Furnace won't turn on and smells like burnt rubber Quote: Originally Posted by handy man88 Is something hung up? what do you mean?

02-06-2011, 08:45 AM	#6
Jersey Pete Newbie   Join Date: Feb 2011 Posts: 9	Gas Furnace won't turn on and smells like burnt rubber The one thing I am confused about. If the problem may be the blower, why does it work ok when the switch is on but takes forever to go on with the switch to auto?

02-06-2011, 08:56 AM	#7
handy man88 Member   Join Date: Jan 2007 Posts: 1,733	Gas Furnace won't turn on and smells like burnt rubber Quote: Originally Posted by Jersey Pete what do you mean? Question was whether the something was physically interfering with the blower turning.

02-06-2011, 08:59 AM	#8
Jackofall1 Experienced     Join Date: Dec 2010 Location: Southern Michigan Posts: 2,801	Gas Furnace won't turn on and smells like burnt rubber Quote: Originally Posted by Jersey Pete The one thing I am confused about. If the problem may be the blower, why does it work ok when the switch is on but takes forever to go on with the switch to auto? Not sure as I am not looking at it, your motor could be a 2 speed motor, whereby the manual switch is wired to a different set of windings, regardless, the blower motor not starting when the call for heat turns it on, tells me that it will eventually fail completely. Mark __________________ When its all said and done there is usually more said than done To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

02-06-2011, 09:00 AM	#9
Jersey Pete Newbie   Join Date: Feb 2011 Posts: 9	Gas Furnace won't turn on and smells like burnt rubber Quote: Originally Posted by handy man88 Question was whether the something was physically interfering with the blower turning. Ah, well I don't think so because it goes on when i put the switch to on. Wouldn't it not go on in any mode if it was stuck?

02-06-2011, 09:05 AM	#10
Jersey Pete Newbie   Join Date: Feb 2011 Posts: 9	Gas Furnace won't turn on and smells like burnt rubber Quote: Originally Posted by Jackofall1 Not sure as I am not looking at it, your motor could be a 2 speed motor, whereby the manual switch is wired to a different set of windings, regardless, the blower motor not starting when the call for heat turns it on, tells me that it will eventually fail completely. Mark So are you saying a possible motor issue not a blower?

02-06-2011, 09:08 AM	#11
Jackofall1 Experienced     Join Date: Dec 2010 Location: Southern Michigan Posts: 2,801	Gas Furnace won't turn on and smells like burnt rubber Yes, the motor in most units, is intregral to the blower, in other words, the motor would be mounted directly to the wheel of the blower. The smell is the insulation on the motor winding getting too hot. Granger or McMaster Carr, will have your motor in stock, but won't be open til tomorrow. Mark __________________ When its all said and done there is usually more said than done To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

02-06-2011, 09:16 AM	#12
Jersey Pete Newbie   Join Date: Feb 2011 Posts: 9	Gas Furnace won't turn on and smells like burnt rubber Quote: Originally Posted by Jackofall1 Yes, the motor in most units, is intregral to the blower, in other words, the motor would be mounted directly to the wheel of the blower. The smell is the insulation on the motor winding getting too hot. Granger or McMaster Carr, will have your motor in stock, but won't be open til tomorrow. Mark Could this result in a possible fire?

02-06-2011, 09:17 AM	#13
Jackofall1 Experienced     Join Date: Dec 2010 Location: Southern Michigan Posts: 2,801	Gas Furnace won't turn on and smells like burnt rubber No, but when the motor finally give in, it will really stink bad and you will have no heat. Mark __________________ When its all said and done there is usually more said than done To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

02-06-2011, 12:19 PM	#14
Jersey Pete Newbie   Join Date: Feb 2011 Posts: 9	Gas Furnace won't turn on and smells like burnt rubber Thanks for the info. How do I figure out exactly what type of motor I need to get?

02-06-2011, 12:20 PM	#15
Jackofall1 Experienced     Join Date: Dec 2010 Location: Southern Michigan Posts: 2,801	Gas Furnace won't turn on and smells like burnt rubber First you need the model # and manufacturer of the furnace, or, just dismantle the fan and take the motor with you. __________________ When its all said and done there is usually more said than done To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.