Honeywell visionpro My Vision Pro 8000 thermostat won't turn off my boiler, regardless of the temperature, or even if it's in heating or cooling mode. I actually have a second (identical) stat in the house, and I installed it on the same face plate, and the boiler went back to normal operation. Is there a way to reset or re-boot the thing? I already changed the batteries, and Honeywell said it's a bad unit. Weird problem.

t1m130

• 86 Answers
• Posted on Jun 30, 2009

SOURCE: Programmable T stat

your trane heat pump energizes the reversing valve with O - orange y - is to turn on the unit make sure you have your orange wire hooked up and the tstat programming set to heatpump otherwise your reversing valve might be bad

SOURCE: Honeywell TH8320u Vision Pro 8000 Digital keeps calling for heat

Hi,
If the thermostat is not over shooting the temperature than don't worry about it.
These thermostats are very sensitive and will turn the heat back on even before the degrees drop on the display. Often they will shut down before the display changes also. You can change the sensitivity of the thermpstat if you read the directions and change the cycles per hour to a less number. There is an installers program in there that you need to push a combiunation of buttons to get too. The instructions tell you how to do that also.

Hopefully you did not throw away the instruction manual for your t-stat.. :-)

Heatman101