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Old January 2nd 07, 09:08 PM posted to alt.home.repair
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Default robert shaw thermostat says 'lo bat' but battery is fresh

I tried replacing the batteries twice. The first time the thermostat worked
fine for a couple hours but after that it shuts off and says 'lo bat'. I
referred to the users manual and got nothing.

Thanks, people.



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Old January 2nd 07, 09:40 PM posted to alt.home.repair
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Default robert shaw thermostat says 'lo bat' but battery is fresh


"sofireme" wrote in message
news:[email protected] ve.com...
I tried replacing the batteries twice. The first time the thermostat worked
fine for a couple hours but after that it shuts off and says 'lo bat'. I
referred to the users manual and got nothing.


Are you using the right cells (batteries). Rechargeables often develop less
voltage. If so, the thermostat is defective.


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Old January 3rd 07, 03:16 AM posted to alt.home.repair
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Default robert shaw thermostat says 'lo bat' but battery is fresh


"sofireme" wrote in message
news:[email protected] ve.com...
I tried replacing the batteries twice. The first time the thermostat worked
fine for a couple hours but after that it shuts off and says 'lo bat'. I
referred to the users manual and got nothing.

Thanks, people.



Are the contacts clean in the thermostat? Where the batteries go, that is.
Clean them with a pencil eraser. Have you checked the batteries on a meter?


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Old January 3rd 07, 03:59 AM posted to alt.home.repair
Art Art is offline
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Default robert shaw thermostat says 'lo bat' but battery is fresh

In my furnace, if the safety decides to disconnect it stops juice to the
thermostat which then runs down the back up battery and end up with drained
battery. Usually happens if condensation pump sticks and overflow tells
furnace to turn off. If you have a condensation pump check the sump to see
if it is full. Otherwise you may have a more significant furnace problem.
Condensation pump floats often stick due to algae and sump needs to be
cleaned once in a while.



"sofireme" wrote in message
news:[email protected] ve.com...
I tried replacing the batteries twice. The first time the thermostat worked
fine for a couple hours but after that it shuts off and says 'lo bat'. I
referred to the users manual and got nothing.

Thanks, people.




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Old January 3rd 07, 04:34 AM posted to alt.home.repair
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Default robert shaw thermostat says 'lo bat' but battery is fresh

sofireme wrote:

I tried replacing the batteries twice. The first time the thermostat worked
fine for a couple hours but after that it shuts off and says 'lo bat'. I
referred to the users manual and got nothing.

Thanks, people.


Hi,
When lo battery is indicated it has few more days juice left to
function. Use good Alkaline ones. If it keeps doing that maybe something
wrong with the 'stat; like cracked solder joint/PCB trace, etc.


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Old January 4th 07, 02:28 PM posted to alt.home.repair
MLD MLD is offline
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Default robert shaw thermostat says 'lo bat' but battery is fresh


"Art" wrote in message
link.net...
In my furnace, if the safety decides to disconnect it stops juice to the
thermostat which then runs down the back up battery and end up with

drained
battery. Usually happens if condensation pump sticks and overflow tells
furnace to turn off. If you have a condensation pump check the sump to

see
if it is full. Otherwise you may have a more significant furnace problem.
Condensation pump floats often stick due to algae and sump needs to be
cleaned once in a while.



"sofireme" wrote in message
news:[email protected] ve.com...
I tried replacing the batteries twice. The first time the thermostat

worked
fine for a couple hours but after that it shuts off and says 'lo bat'. I
referred to the users manual and got nothing.

Thanks, people.



Hard to believe that you allow the condensate pump to shut down your
furnace. What's the better option---some water on the floor or frozen
pipes? Do you actually spend time away in the winter unconcerned that a
"sticky" float could trigger frozen pipes?
MLD


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Old January 5th 07, 07:08 PM posted to alt.home.repair
Art Art is offline
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Default robert shaw thermostat says 'lo bat' but battery is fresh


"MLD" wrote in message news:[email protected]

"Art" wrote in message
link.net...
In my furnace, if the safety decides to disconnect it stops juice to the
thermostat which then runs down the back up battery and end up with

drained
battery. Usually happens if condensation pump sticks and overflow tells
furnace to turn off. If you have a condensation pump check the sump to

see
if it is full. Otherwise you may have a more significant furnace
problem.
Condensation pump floats often stick due to algae and sump needs to be
cleaned once in a while.



"sofireme" wrote in message
news:[email protected] ve.com...
I tried replacing the batteries twice. The first time the thermostat

worked
fine for a couple hours but after that it shuts off and says 'lo bat'.
I
referred to the users manual and got nothing.

Thanks, people.



Hard to believe that you allow the condensate pump to shut down your
furnace. What's the better option---some water on the floor or frozen
pipes? Do you actually spend time away in the winter unconcerned that a
"sticky" float could trigger frozen pipes?
MLD



The issue is condensate backing up into the furnace. I didn't design it....
talk to industry leaders. My house has 3 separate HVAC systems. The only
way my house could freeze is a power failure.


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Old March 20th 16, 12:44 AM posted to alt.home.repair
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Default robert shaw thermostat says 'lo bat' but battery is fresh

replying to sofireme, RDemarest wrote:
sofireme wrote:

I tried replacing the batteries twice. The first time the thermostat worked
fine for a couple hours but after that it shuts off and says 'lo bat'. I
referred to the users manual and got nothing.
Thanks, people.




Had same problem with same stat. This worked for me. Pull cover.
heat/off/cool switch to off. Remove batteries. remove red and white wires
(which supply 24 volts to the circuit) hit reset button. Wait 20 minutes.
restore red and white wires, put in batteries. Hit reset again. Wait 2
minutes and it should work.
Basically cut all power for a while and reinstall. Manual apparently
states batteries should be replaced with switch in off position but my
quess is most people don't read the manual. This looks like a basic
software bug. Good luck.

--


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Old March 20th 16, 11:13 AM posted to alt.home.repair
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Default robert shaw thermostat says 'lo bat' but battery is fresh

On Saturday, March 19, 2016 at 8:44:05 PM UTC-4, RDemarest wrote:
replying to sofireme, RDemarest wrote:
sofireme wrote:

I tried replacing the batteries twice. The first time the thermostat worked
fine for a couple hours but after that it shuts off and says 'lo bat'. I
referred to the users manual and got nothing.
Thanks, people.




Had same problem with same stat. This worked for me. Pull cover.
heat/off/cool switch to off. Remove batteries. remove red and white wires
(which supply 24 volts to the circuit) hit reset button. Wait 20 minutes.
restore red and white wires, put in batteries. Hit reset again. Wait 2
minutes and it should work.
Basically cut all power for a while and reinstall. Manual apparently
states batteries should be replaced with switch in off position but my
quess is most people don't read the manual. This looks like a basic
software bug. Good luck.

--


If you want to remove external power from the thermostat, it would seem
it would be a lot easier to just turn off the AC power to the furnace,
instead of removing wires from the thermostat.
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Old May 4th 16, 02:44 AM posted to alt.home.repair
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Posts: 4
Default robert shaw thermostat says 'lo bat' but battery is fresh

replying to sofireme, robert wrote:
I solved the problem by replacing the sole electrolytic capacitor. Works
again. original capacitor was 1000 uf 6 volts. I replaced with 1000 uf at 10
volts which is slightly bigger but the 6 volt one would work. I had the part
and a soldering iron.

--
posted from
http://www.homeownershub.com/mainten...sh-181194-.htm




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