Red for HOT, Blue for Cold, On for On, and Off for Off. Probably something that specifies the heat level.
'make model (what it is); would give a bit more context.
Or we can just GUESS!
Thermostat Modes/Settings Mean Explained
friarsair.com
https://www.friarsair.com > thermostat-modes-settings-...
Jul 19, 2021 - Heat is one of the classic thermostat modes found on just about every thermostat model. This mode allows you to control your heater or furnace.
What Do Different Thermostat Modes/Settings Mean?
All Temp Co
https://alltemp-ac.com > what-do-different-thermostat-...
Probably the most crucial setting on your entire thermostat is the temperature setting. This setting allows you to pick the exact temperature you want your ...
What Do Different Thermostat Modes/Settings Mean?
Central Air Heating, Cooling & Plumbing
https://www.centralairpdx.com > blog > what-do-diffe...
Jul 19, 2021 - The thermostat has an "On" and "Auto" mode setting for the fans inside your HVAC unit. When the fan setting is in On mode, it will constantly ...
Thermostat Settings ' What Does Hold Mean on ...
Campbell Comfort Systems
https://www.campbellcomfortsystems.com > thermosta...
Nov 7, 2022 - The thermostat auto mode runs based on your desired temperature setting and the actual room temperature. Learn about thermostat settings.
What Do Thermostat Modes/Settings Mean?
BEST Air Conditioning Plumbing Repair
https://bestairconditioningplumbingrepair.com > what-...
Jul 19, 2021 - When you have your fan set on the on mode, your fan will continually run. If you also have your thermostat set on the cooling or the heating ...
Stove Basics: The Different Heat Settings
Kids Are Great Cooks
https://kidsaregreatcooks.com > stove-basics-the-differ...
Medium heat is a safe heat setting for cooking because it usually does not overcook food like higher heat settings. Use medium heat to make foods like scrambled ...
What is the Best Temperature to Set My Thermostat in ...
Direct Energy
https://www.directenergy.com > learning-center > reco...
What is the best setting for your thermostat in the summer to maximize efficiency and coolness? When you're home, the recommended temperature is 78 degrees ..
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