User Guide

RTH7400/RTH7500 Series

Smart Response® Technology

This feature allows the thermostat to “learn” how long the furnace and air

conditioner take to reach programmed temperature settings, so the temperature

is reached at the time you set. For example: Set the Wake time to 6 am, and the

temperature to 70°. The heat will come on before 6 am, so the temperature is 70°

by the time you wake at 6. The message “Recovery” is displayed when the system

is activated before a scheduled time period.

Batteries are required to provide power. Install fresh batteries immediately when

the low battery icon appears. The icon appears about two months before the

batteries are depleted.

Even if the low battery icon does not appear, you should replace

batteries once a year, or before leaving home for more than a

month.

If batteries are inserted within two minutes, the time and day will not have to be

reset. All other settings are permanently stored in memory, and do not require

battery power.

NOTE: When replacing batteries, alkaline batteries are recommended.

1 Press Menu to enter the device menu.

You will see PROG. Press + or - to

choose TIME.

2 Press Select.

3 12HR is displayed. Press + or - to

choose a 12 hour clock or a 24 hour

clock. Press Select.

4 Set the time. Press + or - to adjust

the hour. Press Select.

5 Press + or - to adjust the minutes.

Press Select. Press Select to save and

exit.

Setting the time

Battery replacement