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 10-21-2011, 07:43 PM   #1
Newbie
 
Join Date: Oct 2011
Posts: 1
Rewards Points: 10
Default

Lennox G40UH-48B furnace burners failed to light


LED trouble code is "burners failed to light" but they do light and burn for 30 seconds then a click and they shut off. Cycle repeats 4 times and then lock out. I replaced the return air filters and flame sensor with no change. Both fans run fine.

PAULROB1 is offline   Reply With Quote
Old 10-21-2011, 09:05 PM   #2
An old Tradesmen
 
Join Date: Oct 2008
Location: PA
Posts: 25,961
Rewards Points: 3,592
Default

Lennox G40UH-48B furnace burners failed to light


Could be a poor ground.

beenthere is online now   Reply With Quote
Old 10-21-2011, 09:20 PM   #3
Member
 
JJboy's Avatar
 
Join Date: Oct 2010
Location: Austin - Texas
Posts: 1,402
Rewards Points: 500
Default

Lennox G40UH-48B furnace burners failed to light


check the service manual ==> http://www.google.com/url?sa=t&rct=j...476QDA&cad=rja

You can try to clean the burn and check the igniter
__________________

**Always kill the power ** Hot air rises, but heat will always move from higher to lower temperatures. ** Real man shoot in manual. ** If it ain't grounded, it ain't dead.
JJboy 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
Water Inside/Around American Standard Furnace michrob HVAC 8 12-08-2011 04:51 PM
Fixed pilot light, now furnace or AC won't turn on mjcfromct HVAC 2 10-17-2011 11:46 PM
Burners Won't Light on Trane xl90 ma2willnjack HVAC 4 10-04-2011 07:50 PM
Lennox Elite Series Furnace Will not Light xchvyragtopx HVAC 2 01-10-2011 08:36 PM
Pilot Light works once, then have to re-light after furnace goes off aransas42 HVAC 8 09-30-2009 08:49 AM




Top of Page | View New Posts

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