Ducand Furnace - 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 11-15-2008, 01:34 PM   #1
Newbie
 
Join Date: Nov 2008
Posts: 1
Rewards Points: 10
Default

ducand furnace


the unit fan comes on the the ignites and the the burners go out after about 3-5 seconds and then cold air after about 2 mins the burners ingite again for 3-5 seconds and out again this cycle goes on non stop and the fan stays on and the house is getting colder any ideas?

Advertisement

wintrow105 is offline   Reply With Quote
Old 11-15-2008, 03:52 PM   #2
Member
 
Join Date: Nov 2008
Location: palm coast fl
Posts: 588
Rewards Points: 500
Default

ducand furnace


clean the flame sensor with fine sandpaper or steel wool its located below the burners usually with a single wire going to it its a silver rod with a porcelain end also when the flames are burning they have to engulf the flame sensor completely the f/s gets a fine coating built up on it and creates shortcycleing conditions very common repair

Advertisement

kennzz05 is offline   Reply With Quote
Old 11-17-2008, 08:22 AM   #3
Member
 
Join Date: Sep 2008
Location: Upstate New York
Posts: 368
Rewards Points: 250
Default

ducand furnace


Yes, check the simplest things first. If that doesn't do it then post back with specifics such as efficiency of furnace.
dac122 is offline   Reply With Quote
Old 11-17-2008, 11:11 AM   #4
30 year tech
 
hvac122's Avatar
 
Join Date: Dec 2007
Location: Lincoln, Nebraska
Posts: 427
Rewards Points: 250
Default

ducand furnace


Most manufactures recommend cleaning a flame sensor with scotchbrite or a dollar bill. Not supposed to use sandpaper.
hvac122 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





Top of Page | View New Posts