How to set the day with the Honeywell vision pro TH800 series thermostat screen

try:
https://www.youtube.com/watch?v=0TzL_eLXEpk

or
https://www.manualslib.com/manual/502113/Honeywell-Pro-Th3000-Series.html

Remove the batteries and remove the R or RED wire from the thermostat's sub base R/ RED terminal for 1 hour, if this does not work, replace it.

1-800-honeywell
www.honeywell.com

Change battery located on back of thermostat??

Go to google
Search for your model number 1234XX .pdf
Add .pdf in search parameter.
Honeywell posts most their thermostat manuals.
Open pdf file, and then Use Ctrl+F for search feature
Word-Search manual

To find model number on thermostat, remove from wall.
Model number appears on back.
Don't forget to replace battery while you have back exposed.
Dead battery can also cause lockout and malfunction

If you need further help, I’m available over the phone at https://www.6ya.com/expert/gene_9f0ef4df2f9897e7

Google " vision pro installation manual" download pdf.

If you need further help, reach me via phone at https://www.6ya.com/expert/thomas_092728000e6acb79

IF this is a Honeywell vision pro 8000 I am including the web page for this stat.
Go to this site pages 21-22
http://customer.honeywell.com/techlit/pdf/PackedLit/69-1894EFS.pdf

it sounds like it is time to repalce the stat, auto is set to allow the fan to run only when the heat or a/c is on, the switch for heat and cool will select either, and the temperature lever should allow contact for the bulbs to bring on the desired component. there are no replaceable parts on a thermostat, or I would try to walk you through replaceing them. good luck.. I prefer the honeywell vision pro or the white rodgers 9500 series stats

The Chrono Therm 3 and 4's were some of the worst products that honeywell has EVER put out. I would suggest switching to the Vision Pro 8000, please consult your local HVAC company for more information regarding the change over.

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/cody_17f08cf8e340c06c

FIRE THIS GUY!!!!

You have two systems.
These two systems should be wired totally independent of one another. I have the Pro series t/stat in my house. I love it.... I am a retired contractor I get stuff at cost. I paid about $130 for that t/stat. I understand he is in business to make money. But he should be fair enough that in the future you would want to call him back, Or even give him a nice referral. Alol this guy wants is your money. If the first guy admitted thatbhe did not have the expertice. He shouldn't be paid the experts price.
Call your city or county building inspectors office. Tell them that you would like a list of 4 or 5 reputable heating contractors in your area.
$275 should be fair for the nice t/stat and a fused transformer. Although a cheap t/stat would be fine.
Plus 75 bucks to pull upthe driveway. 60 -90 bucks labor to staighten things out. You should not have to pay for the romantic weekend away for the contractor and his wife.
GOOD LUCK!

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