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

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I have had problems w/ my a/C and have had a repair service out that found 3 different problems and have fixed them..however i am still having problems maintaining a comfortable temperature. my programmable thermostat continues to flash a low battery message, even though i have replaced the batteries...i am wondering if my ac problems are actually a thermostat problem...why would the thermostat continue to say low battery even with fresh ones? do i need to replace the thermostat?

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I would have to say replace the t-stat. did they change the filter. did they check the evap coil. did they clean the condenser coil. your supply temp should be at least 20 deg colder then your return temp. do you have an attic fan and is it working. is your unit over 15 years old the consider a system replacement. is the unit sized correct. every 400 sq foot of house you should have a ton of cooling. also can you feel drafts at your windows. all thing why your house could be warm. also check your ticket and see what your super heat was it should be 9-12 hope this helps.

Posted on Jun 05, 2010


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