this website won't let me upload picture so im not sure what to say.

its an lg premtb10u thermostat and my old one is a white rogers 1f89-211

it worked!

im starting to think they are not compatible.

from what i read on the web site, i think it ONLY works with LG systems. bummer.

uh yeah i included both model numbers.

Get a Nest. They work with most systems and are easy to install. I like the Thermostat E. It's cheaper than the standard model, and I think it actually looks better. Only very few systems require the standard Nest in order to work.

You should make sure you have a common wire if at all possible. You, in principle, can operate without the common wire. But it can result in strange behavior, and in rare cases it can cause damage to the furnace

Sorry. didn't see your first comment. Yes, that is meant for LG systems only. They sell a separate cable that connects the short bit you have here to the LG unit wherever it is located.

If you're looking for a wi-fi thermostat (recommended), consider the reasonably-priced Honeywell RTH6580WF. The TH6320WF2003 has more features but is more expensive. Both require a C wire; be sure your HVAC system has one before purchasing either one.

Some modern thermostats can have wireless remote sensors. That allows you to have the thermostat in a place where you can easily access it. But you then place the temperature sensor in a completely different location where it can do its job.

With the Nest, you can even set a schedule when to use the local and when to use the remote sensor. This can make sense for living spaces and bedrooms that share a single heating zone