I have a new RTH8500. Can I make the backlit stay always on? If so, how?
Do you have 24v coming into the thermostat or are you using a battery? It may be in the installer setup options like the VisionPRO.
You have the cheap version of that t-stat. It does not include that option. If you really want that feature then you need to call a HVAC contractor to install the real Vision Pro.
Karst means cave. So, I search for caves.
I have 24V coming to thermostat and also have 3 batteries.
Karsthuntr may be right. It may or may not be in the installer setup. If you want a backlight to be lit up always, then you may need to have a VisionPRO installed.
Thanks both. Is the VisionPro 8000 compatible with 24V system? Also, Honeywell lists various model #s for VisionPro 8000. What is significance of Model #s?
Model Numbers: TH8110U1003, TH8320U1008, and TH8321U1006, TH8110U1011, TH8320U1016 and TH8321U1014
What kind of system do you have? Gas heat with A/C, heat pump, etc.
I'd go with the TH8320U1008 if you don't want any humidity control by overcooling (TH8321U10**).
Do not try to buy this and install it your self. You will need to call a hvac company to install and match it to your hvac system. I have been out on way too many HO installed and all screwed up.
Aint Notin Sweeter, Then A Brand New Heater!!!!!!!!!!
I have 1 Gas furnace & 1 AC system.