Furnace Blowing Cold Air Only - HVAC - DIY Chatroom Home Improvement Forum


Go Back   DIY Chatroom Home Improvement Forum > Home Improvement > HVAC

CLICK HERE AND JOIN OUR COMMUNITY TODAY...IT'S FREE!

Reply
 
Thread Tools Display Modes
Old 04-05-2012, 01:13 PM   #1
Newbie
 
Join Date: Apr 2012
Posts: 2
Rewards Points: 10
Default

Furnace Blowing Cold Air Only


We have a Heil NUG5075bfb1 furnace. Last night the furnace was running but only blowing cold air. Everything seems to be working, but there is no heat. Upon checking, we noticed more of a gas smell than we ever have. Any ideas?

Advertisement

chilibean is offline   Reply With Quote
Old 04-05-2012, 01:36 PM   #2
Newbie
 
Join Date: Apr 2012
Posts: 22
Rewards Points: 10
Default

Furnace Blowing Cold Air Only


Yeah, and they're all bad. Where do you smell gas, just in the furnace cabinet or in the main house? Don't fool around with it if it is in the main house. Turn off the gas and get out leaving a window or two and a door open and call someone from the neighbors house. Don't turn off any lights switches or equipment and don't use the phone.

Advertisement

GarryE is offline   Reply With Quote
Old 04-05-2012, 01:51 PM   #3
Newbie
 
Join Date: Apr 2012
Posts: 2
Rewards Points: 10
Default

Furnace Blowing Cold Air Only


No, no gas smell in house. Only inside furnace.
chilibean is offline   Reply With Quote
Old 04-05-2012, 02:09 PM   #4
DIY Enthusiast
 
sublime2's Avatar
 
Join Date: Mar 2012
Location: New Jersey
Posts: 1,110
Rewards Points: 500
Default

Furnace Blowing Cold Air Only


Quote:
Originally Posted by chilibean
No, no gas smell in house. Only inside furnace.
Either way CALL THE GAS COMPANY and get out of the house!
sublime2 is offline   Reply With Quote
Old 04-05-2012, 02:34 PM   #5
Newbie
 
Join Date: Apr 2012
Posts: 22
Rewards Points: 10
Default

Furnace Blowing Cold Air Only


I believe this is a medium high efficiency unit that has a draft inducer or combustion air blower and a hot surface igniter. If you have your owners manual there should be a sequence of operation in there that you can follow. Quick check: Turnoff the power to the unit without changing anything, let the blower come to a stop then reenergize it. Does the blower come back on? If it does check for a lockout condition. Some of those units have diagnostic lights and a code listing sometimes inside the door or in the book. Most of them don't but check for a safety lockout reset, check that and also check your air filter dirty filters can cause nuisance lockouts.
GarryE is offline   Reply With Quote
Reply


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
AC not blowing cold air - was told have leak in coil- Cost? H.O.P. HVAC 3 05-17-2011 08:47 PM
cold air intake from outside to furnace... sspeed HVAC 8 03-19-2011 08:26 PM
Cold air in duct in furnace room? DIYguy2000 HVAC 6 12-23-2009 11:42 AM
Goodman furnace blowing lukewarm air mangust13 HVAC 12 02-19-2009 08:38 PM
Furnace blowing cold air. rileyc HVAC 4 02-19-2009 03:18 PM




Top of Page | View New Posts