Tip & How-To about Heating & Cooling

Honeywell TH8320U Thermostat

The Honeywell Vision Pro 8000 Digital Thermostat is a fully programmable thermostat that is so easy to use that you might think that it is reading your mind as you work with it.




This intuitive logic responds to you as you program this thermostat and helps you to do what you wan to do. The instruction manual almost becomes a thing of the past. This thermostat also will learn your building and HVAC system. It then adjusts to keep your temperature within 1 degree F of the set point. This will give you the best in comfort. The comfort is achieved while still giving you the very best is efficiency. In some cases efficiency has been increased by up to 30% by simply installing this thermostat.

The fan can be programmed separately for increased comfort when running an electronic air cleaner or a humidifier. A 35% circulator mode is also available. Hold options will let you easily go on vacation or temporarily override the programmed settings. The vacation setting will even let you set it to go back to the schedule before you get home. There are also built in reminders for many of the things that need scheduled maintenance.

If you are thinking about or have a dual fuel set up or a heat pump furnace set up, then this is the thermostat for you. With the addition of an outdoor sensor you can set the thermostat to switch from one heat source to the other at whatever temperature you set.
This feature will eliminate the need for “change over kits” extra relays, etc… when you are setting up a system that has a backup heat source.



This thermostat will also allow you to run it from the power of your HVAC system or run it on battery power. Just hook up the common wire and the thermostat will run off of your HVAC system. The changeover of the unit from A/C to heat can be programmed to be either manual or automatic. Scheduling of the program can be done in many different ways. You can decide between 1 day, 7 day, 5+2, or 5+1+1, day. Four periods, 2 periods per day or nonprogrammable are all options also.

The keyboard can be locked completely or partially. With the purchase of additional sensors you can wire up remote indoor sensors. These can also be wired to average the temperature is you want to sample the temperature from more than one place. An outdoor sensor can be installed so that you can see from your thermostat the outdoor temperature.

A five year manufacturers warranty is standard and you will also get a thermostat that has earned the energy star rating.

http://www.fixya.com/support/r3869033-replacing_thermostat


http://www.fixya.com/support/r3623083-thermostat_wiring_terminal_designations

http://www.fixya.com/support/r3894275-manual_honeywell_find_honeywell_manuals

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1 Answer

on our thermostat it is reading E3 why is this and how can we fix it


is it a newer model like a Vision Pro 8000? with those t-stats if there is a short in the thermostat wire it will short out the thermostat and read an error problem such as the e 3

Sep 05, 2010 | Honeywell Programmable Thermostat Heater

1 Answer

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

Dec 28, 2009 | Honeywell Programmable Thermostat Heater

1 Answer

locked screen on a vision pro 8000


select system, hold down the two boxes immediatly to the left and right of the center box for 3-5 seconds

Nov 01, 2008 | Honeywell Programmable Thermostat Heater

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