Question about Honeywell Electronic Programmable Heat/Cool Thermostat - CT3300A100 Heater

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"in recovery" mode on thermostat - a/c not working

We had the same problem over the winter with our heating in that the "in recovery" mode was on and the heat was not working.  It was checked out and nothing was found except to make sure the vents were properly ventilated.  It would randomly right itself.  We now have the same problem with the a/c in that the temperature is set at 71, the in room temperature is 77 and the a/c is not running.  The "in recovery" mode is stated on the temperature controls but the fan is not turning on - even when I turn it to on instead of auto.  We've spent a bundle on three different repair visits but they can't find anything wrong.  What to do??

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  • Adam Millstein Apr 22, 2012

    I am having the same exact problem as above. Any ideas on why this is?



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I just sent an email to Honeywell on this "in recovery" message and await their response. Yesterday I set my a/c to t/on in off peak hours 6pm and it came on about 45 minutes earlier, then I reset my a/c to come on at 645pm and today it came on 20 min. earlier, this is so fustrating! When I get a response from Honeywell I will share with the world :(~

Posted on Jun 03, 2010


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The installer can set SYSTEM functions once the thermostat is installed. The
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It's a little hassle to get a DIGITAL copy of your manual (I am not a Robot ~ etc) ~ but here it is:

Download manual

TROUBLESHOOTING begins at Page 68


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