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Honeywell Digital 7-Day Programmable Thermostat RTH7400D1008 Manual

Honeywell Digital 7-Day Programmable Thermostat RTH7400D1008 Manual Image


Why does my thermostat read differently from a thermometer?

Honeywell digital thermostats are designed to display the room temperature in a way similar to how people sense temperature. This means the thermostat takes into account not just the ambient air temperature but also the radiant temperature of objects in the room (i.e., wall and furniture). Room thermometers often only read ambient air temperature so they will not match the thermostat reading. Also, Honeywell thermostats do round in the display to the nearest whole number (half number in Celsius) and to the temperature setting. For example, if you have the thermostat set to 72 degrees the system will turn on and off but the inside reading on the thermostat never changes from 72. The actual temperature did fall to 71 or up to 73 and that is what turned on the heating or cooling but the thermostat display will stay at 72 to avoid jumping up and down constantly.

Does this thermostat offer password protection?

Yes, the Prestige thermostat allows the owner to lock the screen with a password. To set a password on the thermostat: Press the menu tab. Scroll down to and select Security Settings. Press Create Password and note the four digit code provided. Write the password in the space provided in the owner’s manual or another safe location. Press Done to exit. Press Change Lock Mode Select the level of protection desired. Press Done. Press the Previous Menu tab to return to the Menu screen.

Digital 7-day Programmable Thermostat

Thermostat Type Programmable
Color White
Program Modes 7-Day Programmable
Display Type LCD Screen
Warranty 2 Years
Control Functions Heating, Cooling
Alerts and Reminders Filter Change 1, Battery Replacement

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