Forums | Home Repair | Home Improvement | Painting | Interior Decorating | Remodeling | Landscaping


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 06-24-2011, 04:59 PM   #1
Newbie
 
Join Date: Jun 2011
Location: On the High Line in MT
Posts: 9
Share |
Question

Fan will not start in Cool mode


I bought my house in January and am trying to turn my AC unit on for the first time. I can't get the fan to turn on in Cool mode. It works just fine in Heat mode. My furnace is a Lennox Pulse 21 and the outside compressor is also a Lennox. My thermostat is a LuxPro PSP722E that I installed in February of March to replace the old round non-programmable dial that was there. I'm fairly certain I installed it correctly.

Any ideas?

Thanks!

Skull Leader is offline   Reply With Quote
Old 06-24-2011, 05:31 PM   #2
AKA HVACTECHFW
 
Join Date: Nov 2010
Location: NE Indiana
Posts: 2,313
Blog Entries: 1
Default

Fan will not start in Cool mode


what wires do you have to what terminals at the stat?

__________________
IT IS WHAT IT IS
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
hvactech126 is offline   Reply With Quote
Old 06-24-2011, 05:39 PM   #3
Retired from the grind
 
gregzoll's Avatar
 
Join Date: Dec 2006
Location: Midwest - Central Illinois
Posts: 12,963
Default

Fan will not start in Cool mode


hvactech126, I bet that either they forgot the rc/rh jumper, or wired it wrong. Sad thing is, this may be a one poster post as usually happens on weekends, so you may never find out what they did.
gregzoll is offline   Reply With Quote
Old 06-24-2011, 06:35 PM   #4
Newbie
 
Join Date: Jun 2011
Location: On the High Line in MT
Posts: 9
Default

Fan will not start in Cool mode


After fiddleing with the wires I have come to the conclusion that the rc/rh jumper wasn't making a good connection because I had the two wires on the same side of the screw. Problem rectified. That was a simple fix; been puzzling over this for 3 hours now.

@gregzoll
I think you'll be seeing some more of me as I'm about to embark on the great highway that is DIY renovations.

Thanks for the quick responses guys!
Skull Leader is offline   Reply With Quote
Old 06-24-2011, 06:58 PM   #5
Hvac Pro
 
Join Date: Nov 2008
Location: Winnipeg, Canada
Posts: 8,356
Default

Fan will not start in Cool mode


That furnace should have its heat exchanger pressure tested by a Lennox tech for safety every 4 yrs. Also the fan timer board may be obsolete and the retrofit is very expensive. I would start looking/budgeting for a new furnace as parts are hard to get for Pulse's as they have not been made for awhile and some of the specialized parts (gas flapper) are going obsolete as the companies who made them for Lennox are gone out of business due to the recession etc etc.
__________________
"Cut it twice and it is still too short".
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
yuri is offline   Reply With Quote
Old 06-24-2011, 09:05 PM   #6
Retired from the grind
 
gregzoll's Avatar
 
Join Date: Dec 2006
Location: Midwest - Central Illinois
Posts: 12,963
Default

Fan will not start in Cool mode


No, just too many one post posters come on these forums and never return to tell us if they solved the problem or, just hitting multiple forums and possibly loose track. Hopefully with yuri's help, you should be able to get it solved.

gregzoll 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
Mini Splits - Always On & Auto vs. Cool function mobiledynamics HVAC 2 08-23-2010 02:39 PM
I have Central Heating & Air, but house won't cool down..HELP!! exiledone1 HVAC 13 07-10-2009 10:09 PM
Windows XP Mode in Windows 7! poppameth PC Repairs & Upgrades 5 04-28-2009 12:18 PM
Water from cold water faucet goes from cool to hot to cool tima2381 Plumbing 6 05-22-2007 08:02 AM
new 3 ton hvac Payne units. No cool air comes out when fan, compressor,thermostat run runbikeengr HVAC 10 04-10-2007 05:59 PM




Top of Page | View New Posts

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