A manual is what you need to unlock and reprogram the schedule. Keep off the set up steps for the thermostat, only the scheduling and security steps.
https://www.manualslib.com/manual/1189747/Honeywell-T6-Pro.html?page=8#manual
SOURCE: wiring diagram to connect programmable Thermo to Heat Pump
I don't know if this will be helpful or not, but I just installed a new Honeywell and the Honeywell customer service guy helped me get the wires done correctly. The number is 800-468-1502.
SOURCE: How to lock a Honeywell TB7220U Thermostat
With directions go to system. Then hold down 2 blanks on either side of middle for 30seconds this shows you Advanced settings . Read through and find the proper settings
SOURCE: how can I remove the set program on my honeywell
Just set the temperature you want and then press hold and this will keep the temperature you want.
SOURCE: I have an Acoustic Solutions TV model LCDWDVD19FB
If google and manufacturer website are of no help then ask a search agency like http://manualfox.com - They do a great job.
The service is not for free, but often worthy (you only pay if they find what you are asking for).
SOURCE: White digital Honeywell Theromastat that is stuck
What model is it? example pro 5000, 6000, 8000 ext.
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