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Posted by Zephyr on February 1, 2007, 9:35 am
>
> <snip>
>
> I should have provided some more info,
>
> it is a gas furnace, I have a gas water heater, and gas stove. The
> furnace had the exhaust fan and ignitor unit replaced earlier this year
> under home warrenty. I have a few vents closed currently to prevent
> heating of unused rooms.
>
I should have also added that I never see this happening when the furnace is
just maintaining the temp,
>
>>
>> It isn't a problem with the furnace, because he said that when this
>> happens, the "heat" indicator on the thermostat goes out and the
>> recovery indicator stays on. If it were the furnace, the heat
>> indicator on the thermostat would not change.
>>
>
>
> That was my thinking too, that if the heat indicator went off on the
> stat, that it was not the furnace that was at fault, it was the stat.
> A friend of mine (who had not looked at it) suggested that maybe the
> furnace was overheating, but, given the situation with the stat, I was
> skeptical of that possibility. Unless the funace had some overheating
> sensor that fed to the stat that turned of the stat, instead of just
> stopping the furnace leaving the stat still calling for heat.
>
> That all said, I do have a few vents closed in spare bedrooms and all the
> vents in the unfinished basement.
>
>> I think the service menu that Tony is referring to is the advanced
>> settings menu in the thermostat. Some of the HW thermostats, like
>> the LCD touchscreeen (8600?) ones have a zillion settings. It's
>> possible something in there controls this. Like maybe it's set for
>> some dual fuel system option, where it uses one fuel to get most of
>> the way, then switches.
>
> I will look into the stats menu settings, it doesn't seem like there is a
> lot there, this is a lower end model, it doesn't even record the run
> times for the past day/week/period.
>
>
>> If you can't find a setting, I'd contact HW or look on their FAQ page,
>> etc. My vote is this isn't right, and it's either a setting or a
>> software bug, but it's not a failure in the thermostat.
>>
>>
>>> In all fairness, I am making a lot of guesses here, but I suspect
>>> you
>>> will need to have someone check out the furnace. If it needs repair, I
>>> would consider a newer high efficiency furnace as it may not pay to
>>> repair
>>> that lower efficiency one in the long run.
>>>
>>> --
>>> Joseph Meehan
>>>
>>> Dia 's Muire duit- Hide quoted text -
>>>
>>> - Show quoted text -
>>
>
>
>
> Thanks for all your help
>
> Dave
>
>
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