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The user manual/installation manual "settings" on this stat are misleading. When you program the stat using the Setup Functions option you will get your AC and Heat to work BUT after setting a temperature and an hour or so elapses the temp will revert to an extreme energy saving mode i.e., 73 degree heat will revert to 58 degrees. 78 degree cooling to 85 degrees. In order to KEEP your chosen setting the "HOLD" button on the Touch Screen MUST be pressed. My set of installation instructions failed to mention this and it took me several hours of internet searches and phone calls to finally have someone describe and solve the problem. Without setting the HOLD function all settings are TEMPORARY and automatically revert to "Energy Saving". Otherwise the stat performs perfectly. This is a Commercial Thermostat and not really designed as a Home Thermostat. That being said, the stat will work fine in a home it just takes a little more initial knowledge of HVAC System types, wiring and brain effort to program it. Since this is a "Special Applications" thermostat, Honeywell does NOT support it and will give you NO ANSWERS to any questions you may have about it or its installation or setup. Keep that in mind. This is probably just a Home Thermostat on steroids and it'll still lift a sack of groceries so to speak, but it'll use a lot more muscles while doing it.Read full review
Verified purchase: Yes | Condition: Pre-owned
Disappointed because I received the thermostat and it was missing the coin cell battery holder. Could not get it to work and finally discovered it was missing. From what I can tell, everything else functions. But will not know for sure until I get the coin cell battery.
Verified purchase: Yes | Condition: Pre-owned
I used this unit to replace the same type unit that I damaged while cleaning and changing batteries. Light quit working. My old Honeywell was 10 years old. Don't get any oils or cleaners on the green screen and change the back up batteries yearly before they leak. Unit was easy to install and program to my needs. It comes with a factory program so it will work out of the box. I would buy and use this unit again on my A/C Heat Pump System
Verified purchase: Yes | Condition: New
These are outdated very large, the lcd’s quit working frequently. I only buy them to match a wall of units on a large church on a budget. Otherwise I would order the new Honeywell T10 with the remote sensors.
Verified purchase: Yes | Condition: Pre-owned
The backlit screen lights up the thermostat for easy viewing at night. You can program all 7 days with custom multiple temperatures intervals on the same day. The touch screen is nice and user friendly. It has air filter reminder that you can set monthly, 3months...etc.
Verified purchase: No
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