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

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

Reply
 
Thread Tools Search this Thread Display Modes
Old 01-26-2011, 03:23 PM   #1
Newbie
 
Join Date: Jan 2011
Posts: 1
Share |
Default

Heat not coming on in the morning.


I have a lennox furnace. At night I turn it down to around 55-60 so unless it gets really cold overnight it doesn't come on. In the morning I put it back to 68. A couple of weeks ago It stopped wanting to come back on in the morning. I tried a few things and what makes it light up again is running the big fan for a couple minutes. After about 3-5 minutes of the fan running by itself the furnace will kick on automatically and work like normal. Any ideas as to why this is happening?

garzaglass is offline   Reply With Quote
Old 01-26-2011, 04:10 PM   #2
Member
 
hvaclover's Avatar
 
Join Date: Oct 2008
Location: Suburbs of Detroit Mi
Posts: 3,704
Default

Heat not coming on in the morning.


First thing makes me think of is a dirty filter.

Next you could have a motor or motor capacitor that is going bad. During the time the furnace is on the motor stays warm and wont seize. Turn the furnace on after a long off period it won't start on the low speed. When you turn the fan to "on" the blower starts and cooll the sfety limit and the burners light.
The capacitor is also suspect.

__________________
Just slow, not stupid.
hvaclover is offline   Reply With Quote
Old 01-26-2011, 06:57 PM   #3
Member
 
Join Date: Oct 2009
Location: Nebraska
Posts: 2,362
Default

Heat not coming on in the morning.


Been on many calls where the heat doesn't work after a night set back and cleaning a dirty flame sensor takes care of the issue. If they're right on the edge of working or not the cold will push it on the not working side. Worth a shot at least.

Last edited by Marty S.; 01-26-2011 at 06:59 PM.
Marty S. is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
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
Heatpump vs Natural Gas - Energy Cost Spreadsheet zootjeff HVAC 8 11-19-2011 10:45 PM
Goodman GPH1336H21AA heat strip connection jrajra HVAC 2 09-02-2010 04:52 PM
Comparison and Heat Pump Selection help... ChrisDIY HVAC 7 03-06-2010 08:34 PM
Heat Pump Blower always on gg_daman HVAC 1 12-16-2009 06:15 AM
changed thermostat on York Affinity, now no heat? sotwell HVAC 1 03-01-2009 05:34 PM




Top of Page | View New Posts

Copyright © 2003-2014 Escalate Media. All Rights Reserved.