Lp Furnace Won't Reach Stat Temp - Turns Off - HVAC - DIY Chatroom Home Improvement Forum

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


Thread Tools Display Modes
Old 10-30-2012, 05:42 PM   #1
Join Date: Oct 2012
Posts: 10
Rewards Points: 12

Lp furnace won't reach stat temp - turns off

Just moved into a house with a 10 year old lp furnace. It's an arcoaire 4 position 9mpd two pipe model. Also have Honeywell programmable stat. I set all time periods for 72 degrees but it won't get above 66. If I set it for 80 it doesn't kick on either.

I took the top door off to check things out. It was inactive and then I see igniter glow and the gas ignites and it fires up. This lasts for about 2 minutes and the gas shuts off. 15 seconds later the igniter glows again for maybe 20 seconds and then turns off. 30 seconds later this happens again. I checked the filter and it was fairly new. I replaced it just to be sure. It's still 65 or 66 in here. Not sure if any of this points to a stat issue or furnace issue. Any ideas?


cwb124 is offline   Reply With Quote
Old 10-30-2012, 06:53 PM   #2
I'm Your Huckleberry
Join Date: Mar 2011
Posts: 5,884
Rewards Points: 2,270

Turn stat off and in the furnace jump the R to the w to bring on heat. See if it stays running until jumper wire is removed. Be careful, don't want to blow the fuse on the control board so leave the furnace door switch out (no power to furnace) then attach jumper wires and then hold in or tape furnace door switch down.

If no door switch then turn the breaker off, jump terminals and then turn breaker back on.


Doc Holliday is offline   Reply With Quote

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
Sears GAs furnace issue with burner running too long dmanmtl HVAC 17 01-03-2012 09:41 PM
Peerless oil furnace - keeps turning on when temp exceeds target temp eugenet1979 HVAC 0 12-22-2011 08:30 PM
Furnace running proper? Spydey HVAC 6 12-16-2011 07:57 PM
Furnace Model # Feh-015-04 clicking but not turning on? haimei HVAC 1 12-14-2010 05:01 PM
Carrier Infinity 69 Trouble Code 42 bodya1 HVAC 4 12-05-2010 06:43 PM

Top of Page | View New Posts


Search Engine Friendly URLs by vBSEO 3.6.1