A/C Fan Stuck to ON

Reply

  #1  
Old 09-20-13, 11:47 PM
D
Member
Thread Starter
Join Date: Sep 2013
Posts: 1
Received 0 Votes on 0 Posts
A/C Fan Stuck to ON

I have a 3year old 2 story home with the dual zone A/C setup. Lately I've noticed the AC blower never shutting off.. The A/C cools appropriately and you can hear the unit outside turn on and kick off like usual, but the fan just never stops pushing air through the house. Both the upstairs and downstairs thermostats are set to "auto" fan and "HOLD" on their temps.
Upon taking the upstairs thermostat off the wall, the fan turned off. Is the answer to the problem simply replacing the thermostat upstairs, or does the unit have some sort of default to auto shut off everything if a thermostat is disconnected? Could it be a contact on the outside unit? If it makes any difference, it's a Honeywell digital thermostat. Plugging the unit back into the wall after several minutes, sadly, kicks the fan back on even if the temp is set way higher than the actual temp(keeping the compressor off.)
Slightly off topic but just curious - does the fan suck down much electricity? It's summer time, but the elec bill does seem higher than I ever remember in the past..
 
Sponsored Links
  #2  
Old 09-21-13, 10:18 AM
PJmax's Avatar
Group Moderator
Join Date: Oct 2012
Location: Northern NJ - USA
Posts: 59,175
Received 1,118 Votes on 1,038 Posts
Welcome to the forums.


If it makes any difference, it's a Honeywell digital thermostat.
Honeywell makes literally hundreds of digital thermostats. From the basic to the extreme.

But in your case it does indeed sound like a defective thermostat. I'm guessing that the blower fan was working correctly in the recent past and this is a new problem.

There are two trains of thought. Leave the fan on auto to just move the cool air while it's being generated or leave fan on to keep temps even in the house.

In a dual system like yours I would think that running the blower on auto would be more energy effecient.
 
Reply
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


Thread Tools
Search this Thread
 
Ask a Question
Question Title:
Description:
Your question will be posted in: