We have a White Rogers Thermostat and today it must be 400 degrees out. In trying to set the darn thermostat to cool the house down, we noticed there is an "L" on it. The book for the thermostat says that means it means "limited range" but darn if we can find anywhere in the book what exactly that means and how to get rid of it.

Can you please help? This is the first day of an extreme heat wave and I don't do "HOT" very well, especially at night.

EXACT Model number of thermostat.

My batterys are low in my crystal ball so this time you will have to post the model number so we can help you.