Temperature Drops But Thermostat Reading Rises - HVAC - DIY Chatroom Home Improvement Forum

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


Thread Tools Display Modes
Old 05-08-2012, 12:43 PM   #1
Join Date: May 2012
Posts: 2
Rewards Points: 10

Temperature drops but thermostat reading rises

My thermostat turns on the a/c, and the temperature in the house drops, but the temperature reading on the thermostat actually rises, which means that the a/c doesn't turn off. I replaced the thermostat, thinking this would solve the problem, but it didn't. The same thing happens with the new one. I felt the wall around the thermostat and it doesn't feel warm. Any idea what's happening, or any suggestions? Thanks.


gbekurs is offline   Reply With Quote
Old 05-08-2012, 01:35 PM   #2
Join Date: Oct 2011
Location: Alabama
Posts: 263
Rewards Points: 214

Well some of the pros will chime in but I have a question.

Did you relocate the thermostat from where it was originally? I would assume this hasn't always been a problem?

If so, it's possible you may have located it in a poor area. Maybe it is by a window or door and a draft is being created when the system is on, thus pulling in warmer outside air?

I cannot figure any other sceneario considering the tstat just measures the surrounding air temperature. If it's going up, as you state, then you have to be circulating warmer air past it. Does it never go down or is it just slow in going down?

Good luck


Ralph III is offline   Reply With Quote
Old 05-08-2012, 01:54 PM   #3
Join Date: May 2012
Posts: 2
Rewards Points: 10

Thanks. I just bought the house, so I don't know whether this was a problem previously. I think the thermostat has been in the same place since construction (30 years).
gbekurs is offline   Reply With Quote
Old 05-08-2012, 04:50 PM   #4
biggles's Avatar
Join Date: Jan 2008
Location: Long Island
Posts: 3,630
Rewards Points: 2,000

did you put your nose/face up to the opening on the wall where the wires come out of to see if there is draft.feeling the wall won't tell anything tape over the hole 2-3 strips of tape then reinstall the subbase
biggles is offline   Reply With Quote

a/c , hvac , inaccurate , temperature , thermostat

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
Need help replacing an OLD General Controls Thermostat ohman HVAC 3 06-08-2011 05:35 PM
Replacing old Honeywell thermostat with new Honeywell thermostat optimizer HVAC 13 04-20-2011 06:22 PM
how to stop condensation on windows? cake General DIY Discussions 7 11-22-2008 12:12 AM
Thermostat reading incorrectly - cooling only CindyWOOOHOOO HVAC 5 06-27-2008 08:51 PM
Sweating windows big daddy-o General DIY Discussions 15 01-06-2008 02:41 PM

Top of Page | View New Posts


Search Engine Friendly URLs by vBSEO 3.6.1