Ask Experts Questions for FREE Help !
Ask
    kwjaxon's Avatar
    kwjaxon Posts: 2, Reputation: 1
    New Member
    		  
    #1

    Oct 15, 2008, 02:53 PM
    Only furnace blower goes on at power up.
    I have a Tempstar Furnace Model NUG5100 BFB2 installed in 1995 I think. When you power up the unit the furnace fan comes on and that is all. Have checked thermo, changed to another, replaced furnace module(fan timer control) and still only the fan will blow. Help if you please.
    hvac1000's Avatar
    hvac1000 Posts: 14,540, Reputation: 435
    Heating & Air Conditioning Expert
    		  
    #2

    Oct 15, 2008, 04:46 PM
    How many blinks is the light showing if there is one.
    mygirlsdad77's Avatar
    mygirlsdad77 Posts: 5,713, Reputation: 339
    Plumbing Expert
    		  
    #3

    Oct 15, 2008, 05:01 PM

    Check your high limit and flame rollout switches. Flame rollouts are most likely reset-able. Please let us know what you find.
    kwjaxon's Avatar
    kwjaxon Posts: 2, Reputation: 1
    New Member
    		  
    #4

    Oct 16, 2008, 07:30 AM

    Hey guys, the flame rollout switch was the culprit. Was resetable. Did the trick. Was about to order new furnace. Thanks a million. This site is now one of my bookmarks. Thanks again.
    glacefam's Avatar
    glacefam Posts: 2, Reputation: 1
    New Member
    		  
    #5

    Nov 22, 2008, 12:46 PM
    I am having the same problem with the same furnace however I can force the burner on by jumping out the pressure switch. I cannot locate a replacement. Where can one buy a two wire-one hose pressure switch (actually vacuum) for the NUG5100BHB2.
    hvac1000's Avatar
    hvac1000 Posts: 14,540, Reputation: 435
    Heating & Air Conditioning Expert
    		  
    #6

    Nov 22, 2008, 01:08 PM
    Glacefam This is probably the same thing since the furnaces are made by the same company I believe. When you call the second link as them for sure.

    https://www.askmehelpdesk.com/heatin...ce-283935.html
    hvac1000's Avatar
    hvac1000 Posts: 14,540, Reputation: 435
    Heating & Air Conditioning Expert
    		  
    #7

    Nov 22, 2008, 01:10 PM
    Quote Originally Posted by kwjaxon View Post
    Hey guys, the flame rollout switch was the culprit. Was resetable. Did the trick. Was about to order new furnace. Thanks a million. This site is now one of my bookmarks. Thanks again.

    The flame roll out switch activated for some reason. Keep an eye on it for awhile and if it trips again call for service the unit could be overheating/to much heat rolling out of the vestibule area.
Not your question? Ask your question View similar questions
 

Question Tools Search this Question
Search this Question:

Advanced Search

Add your answer here.


Check out some similar questions!

Power Vent Blower does not turn off [ 3 Answers ]

I have a model #pr675nrvt "STATE SELECT" gas hot water heater, whose power vent blower fan runs continuously. Does anyone have a solution to this problem ?

Carrier furnace blower no shut off except power [ 3 Answers ]

I have a carrier furnace. The blower is not shutting off, even when the thermostat is set to off. Could it be the thermostat unit? The relay? The circuit board on the carrier? A fan switch somewhere? Where is the best place to start diagnosing this problem? And in what order should it be done? ...

Blower getting power but not turning [ 2 Answers ]

My blower in my central air conditioning is not working properly. Everything else seems to be working. I turn off the power to the unit and took of the cover to get to the blower, everything looked fine and the blower turns smoothly, but I noticed a slight burning smell. I turn the power back on...

Blower motor power [ 1 Answers ]

Hello , I have a magic chef furnace that was working and all of a sudden quit. I am getting power to the furnace, and motor is good because I removed motor and had it professionally tested. I was not getting power to blower motor but could hear the click from the relay, I tried both...

New blower with no power [ 7 Answers ]

Just bought this ariens 5 hp 22 or so wide, snow blower with 8 speeds and electric start when I start it it starts fine but when iget to snow blowing it just throws it a foot or so and then gets colged it almost seems like it's not spining fast enough or something ?

View more questions Search