The User Guide for this product can be found on the Honeywell Thermostat Manual website.
Do not do this.
There are several different places where one can purchase a Honeywell programmable thermostat from. Some of these places include the official Honeywell website, Canadian Tire, and Amazon.
this stands for emergency heat
Honeywell
Ma'am - The Honeywell Thermostat products belong to a different division than the Honeywell division for which distribute products. We have no information on them. The web site for that division is: http://yourhome.honeywell.com/home/products/thermostats/
Hold the reset button for 30 seconds.
Em ht stands for emergecy heat.
You can program for 7 days
cool
A Honeywell 7 Day Programmable Thermostat is approximately $119.00 at home improvement stores such as Lowes or Home Depot. The advantages of a programmable thermostat far outweigh the disadvantage of the price. These even allow you to access them with your smartphone to change the temperature on demand!
If your alarm system is similar to ours to reset it you need to enter your security code, press enter, then at the menu punch in 27 and hit enter again.