Question about Honeywell Heating & Cooling

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Thermostat message battery low. Put in two new batteries and it will not reset or start. Lost Power during storm and cannot get it going again.

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Let me see if I understand your question.. your thermostat indicated the batteries needed to be replaced so you changed them with new ones.. With new batteries, you cannot get your thermostat to initialize or program correctly and as a result of that, you cannot get your AC system to start up.. If that is true, please provide the Honeywell Model # and verify the batteries you installed were Ok,...
Will attempt to assist once you've provided this info..

( on an off chance, have you checked the fuse or cuircuit breaker for your AC system to make sure it has power available?) This is especially important after a power outage..

Posted on Sep 17, 2008

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1 Answer

Switched my thermostat to heat now I have no power to my thermostat it went blank and nothing is coming on!!!


If your thermostat uses batteries, they may have expired during the summer. If you install new batteries, the thermostat display should come on

Oct 31, 2012 | Heating & Cooling

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Recently, the power went off during a storm and now suddenly my thermostat stopped working. I changed the batteries and it worked, but now I'm changing it every couple of days. The batteries used to be...


Hello

You have lost your a/c power to your T stat.

Have a look in your fuse/circut breaker box for a blown breaker and reset it.

You may need to have your heat unit checked for a blown low voltage fuse also.

Nov 08, 2010 | Heating & Cooling

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I turned my ac off yesterday. I turned it back on tonight and it would not turn on. I noticed it was flashing (Change batteries) so I put new ones in. I waited till the cool on stopped flashing and it...


Hi, there is nothing more aggravating than having your household appliances not work.
Like a computer, the "thermostat" (it holds the batteries) retains the information you program (maybe the technician) to set the temperature controls.
The highs and lows can normally be bypassed with the push of a button.
Removing the batteries clears the memory. (Volatile memory).
When this happens, you must reprogram the thermostat so it knows what settings to operate at.
Can you get the instructions on how to program the thermostat? The instructions are usually on a paper on the thermostat lid.

(when changing batteries, remove one battery, then put a new one in its place before removing the next one. This keep some power to prevent the settings from being cleared.

Oct 08, 2010 | Goodman GPC1342H21A Air Conditioner

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My white rodgers thermostat has no more display even though the battery is new


useually this is because the indoor unit has lost power im but with new battery that is puzzling try another battery and look for a reset on the thermostat also check at the indoor unit if you have one to see if maybe their is water in the exterior drian pan causing the float switch to cut the power

Sep 25, 2010 | Heating & Cooling

1 Answer

I keep my thermostat set on 78 degrees but occasionally it will reset its self to 85*.It is set to a max of 80* and the temp does not go higher than that,however one time it switched its self from cool to...


theirs a few things that will cause this 1 loss of power and dead batteries 2 you have a defective thermostat and need to replace it some guys will put the thermostat in and not hook up the common wire cause it is not needed if it has batteries the downfall is you go thru batteries faster and have nothing for back up make sure common is hooked up and put fresh batteries in if the problem still occurs the thermostat is bad

Sep 12, 2010 | Heating & Cooling

1 Answer

When we have a power bump the unit reverts back to factory settings, Can a ups be added to the control board to eliminate this problem?


Not sure why your unit would reset to factory settings, it's usually the thermostat settings that control the unit and resets when you have a power failure. Most thermostats have a battery in then to power the thermostat during a power failure. They usually only maintain the power from 15 to 30 minutes to maintain your settings, before defaulting back to factory settings. After every power failure you usually have to replace the batteries.

Feb 26, 2010 | Samsung AP500PF Air Conditioner

1 Answer

Thermostat reset???


after you changed the battries did you check the set point. it is also possible that the batteries have ruined the stat

Aug 30, 2009 | Heating & Cooling

1 Answer

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These temperatures are generally associated
with default (factory) values. Programmable
thermostats have batteries/capacitors to retain
program memory during power outages.
Check batteries/power supply. Switch fan on at t-stat to verify control voltage. Program
t-stat and restore operation.
Please also check low voltage connections
for tightness (power off).

Aug 06, 2009 | Heating & Cooling

2 Answers

Thermostat wont turn on heater Robert Shaw 9600 prog.


I have a thermostat 9600 Robertshaw and I have to use the trip switch to start my furnace. Then it reaches the temperature and sometimes it will kick in by itself but majority of the time I have to trip it. I have changed the batteries cleaned the thermostat,and reset it. Is it time for a new thermostat and can I replace it myself. Thanks

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