Question about Honeywell Programmable Thermostat Heater

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I have an old (14 years) honeywell thermostat, that showed 1bat lo message on the screen. I replaced the batteries, but it still shows the same message and I cannot adjust the temp. I recall earlier problems that were solved by waiting an amount of time between turning it off an on but now I cannot find the manual! Need a newer thermostat????

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  • 144 Answers

I subjest the honeywell pro 3000 is a very good stat it comes in programable and non programable their is also a pro 8000 that is great its touch screen and has many options but the 3000 is most cost effective

Posted on Sep 14, 2010

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Feb 19, 2015 | Heating & Cooling

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Our Honeywell programmable thermostat T8132A 1049 1 controls a Gasglo gas central heater. An old battery leaked onto one battery contact; even with new batteries the BATT LO message came up. After...


The T8132A thermstat requires 2 AA alkaline batteries for operation as the T8131 uses the 24VAC souce transformer with battery back up. If new batteries did not fix the problem follow product user manual to reset and program the thermostat. This should clear any errors or problems. If the problem persists then replace the thermostat. If you do not feel confident you can accomplish the task then you should call a licensed HVAC technician to troubleshoot the issue as the wrong settings could potentially cause permanent damage to your system.

Link:
http://s3.pexsupply.com/manuals/1287594709924/40775_PROD_FILE.pdf

May 09, 2011 | Honeywell Programmable Thermostat Heater

1 Answer

We have a Honeywell Digital thermosat. We just put brand new batteries in it and it is still showing lo battery.


on most of honeywell units if you pull the face of the thermostat off there is a reset button you can puch and reset try this.... if it does not have a reset remove the red power wire on the "r" terminal and if you have a wire hooked to the "c" terminal remove it at same time ///take batteries out prior to doing this and it will reset the program in thermostat... if the display comes back again with the lo battery the thermostat internally has a issue...good luck

Jan 09, 2011 | Honeywell Programmable Thermostat Heater

1 Answer

I changed the batteries of the Honeywell thermostat and on the screen it still shows low battery.


Hello my name is Heath it will be my pleasure to assist you. Take the new batteries out and let the display go completely blank then reinstall the new batteries and the lo batt light should go off.

Nov 08, 2010 | Honeywell Heating & Cooling

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I get the mesage 1bAT Lo When I replace the batteries the message stays on and I can't program the thermostat. The batteries are new and are OK.


try reseting the thermostat there will be a small button near the temp. control buttons you will need to push it with a pin pen or pencil because of its size

Aug 22, 2010 | Honeywell Programmable Thermostat Heater

2 Answers

Even after replacing the battery, the programmable Honeywell thermostat still shows "Low Batt."


Turn control to off. Remove the batteries for at least one hour. If the display message still reads "bat lo", leave control off, batteries out, and disconnect the red wire on back and wait another hour. Reconnect red wire, put new batteries in and turn system on. It's like a reboot.

Jan 26, 2010 | Honeywell Programmable Thermostat Heater

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