Honeywell TH8000 VisionPRO Thermostat Issue

[ErnieAnderson]

Our Honeywell TH8000 series thermostat started running at 60 degrees and the
"change filter" display was flashing. I checked the furnace and the light was
flashing for "intake obstructed". I change the filter and when the furnace ran
again the indicator lights returned to normal. However, the thermostat is
still not happy. It still says "change filter". There's a reset button
visible, but it doesn't respond. The only controls that work are the temp up
and down controls , and the More button. Pressing the More button takes me to
a filter screen with Reset, Edit, Done, and Cancel buttons. There is a number
0 displayed. The only button that does anything on this screen is the Cancel
button. The temp up and down controls on the main screen allow us to take the
temp up from 60, but it's a temporary override with a time limit. The time
limit also has up and down controls that work, but we can only go for a few
hours. For all the buttons I need to push, I've tried long presses, I've tried
fingernail presses, nothing changes. We've been in this house less than two
years and I've replaced the filter before, but never had to press the reset
filter button. I'm concerned that the thermostat was set with a zero day
countdown on the filter reset and the intake obstruction caused the reset
filter indicator to go on, but there's a programming glitch that won't let you
reset with a zero day timer. I can see where an intake obstruction would cause
the thermostat to go into a limited functionality mode and wouldn't let me do
anything else. I've tried taking the thermostat off the wall and removing the
batteries, that didn't work. Help!

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for full context, visit https://www.homeownershub.com/hvac/honeywell-th8000-visionpro-thermostat-issue-48932-.htm

[catalpa]

Post by ErnieAnderson
Our Honeywell TH8000 series thermostat started running at 60 degrees and the
"change filter" display was flashing. I checked the furnace and the light was
flashing for "intake obstructed". I change the filter and when the furnace ran
again the indicator lights returned to normal. However, the thermostat is
still not happy. It still says "change filter". There's a reset button
visible, but it doesn't respond. The only controls that work are the temp up
and down controls , and the More button. Pressing the More button takes me to
a filter screen with Reset, Edit, Done, and Cancel buttons. There is a number
0 displayed. The only button that does anything on this screen is the Cancel
button. The temp up and down controls on the main screen allow us to take the
temp up from 60, but it's a temporary override with a time limit. The time
limit also has up and down controls that work, but we can only go for a few
hours. For all the buttons I need to push, I've tried long presses, I've tried
fingernail presses, nothing changes. We've been in this house less than two
years and I've replaced the filter before, but never had to press the reset
filter button. I'm concerned that the thermostat was set with a zero day
countdown on the filter reset and the intake obstruction caused the reset
filter indicator to go on, but there's a programming glitch that won't let you
reset with a zero day timer. I can see where an intake obstruction would cause
the thermostat to go into a limited functionality mode and wouldn't let me do
anything else. I've tried taking the thermostat off the wall and removing the
batteries, that didn't work. Help!
--
for full context, visit
https://www.homeownershub.com/hvac/honeywell-th8000-visionpro-thermostat-issue-48932-.htm

Get rid of that complicated piece of junk and replace it with a simpler
thermostat.

You tell the thermostat what to do, not the other way around.

[Monte]

replying to ErnieAnderson, Monte wrote:
I am assuming that your furnace is a 90+ using PVC for a flue and combustion
air, "intake obstructed" usually has to do with the combustion air pipe not
the furnace filter. The only home owner solution I can think of right now is
to turn the furnace off by the switch and leave it off for a few minutes then
restart the furnace the error code may still exist in the furnace.
Also some times the Internet (you-tube etc.) may have some other suggestions.
Having the name and model number of the furnace might help in diagnoses.
Other tradesman seam to like the Honeywell t'stats I personally have not had
good luck with them, a higher than normal, .failure rate but that is me. (40+
years HVAC&R)

--
for full context, visit https://www.homeownershub.com/hvac/honeywell-th8000-visionpro-thermostat-issue-48932-.htm