Honeywell manual Operating the CM721, Choosing the Operating Mode, During Normal Operation

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OPERATING THE CM721

‘Using the Features’

Choosing the Operating Mode

The thermostat can operate in three different modes: Automatic, Manual or Off. To set the operating mode press either of the AUTO, MAN or OFF buttons. The screen indicates which mode is currently active by displaying AUTO, MAN or OFF.

•AUTO (automatic) mode sets the thermostat to follow the built-in temperature program (default or personalised). Operating the thermostat in this mode is the best way to maintain a high level of temperature comfort whilst maximising your energy savings.

•MAN (manual) mode sets the thermostat to act as a simple thermostat with a fixed setpoint

throughout the day. The setpoint can be adjusted from 5°C to 35°C by using the or buttons. The thermostat will continue to maintain this temperature until another operating mode or temperature is selected.

•OFF mode sets the thermostat to control to a minimum temperature setting of 5°C (default) that acts as a frost protection measure for your home.

During Normal Operation

•Temperature Enquiry

In AUTO, MAN and OFF operating modes the thermostat will display the current room temperature. To review the programmed ‘target’ temperature (the temperature which the thermostat is trying to maintain) press the button. This ‘target’ temperature value will be displayed flashing for 5 seconds before returning to the current room temperature value.

•Temperature Override

During normal operation (AUTO mode) the programmed temperature can be adjusted manually

by pressing the or buttons or the button. The ‘target’ temperature will be displayed and

flash for 5 seconds - during this time the or buttons can be used to modify the set value.

Note: This temperature override is cancelled at the next programmed temperature change.

Adjusting the Time

To adjust only the time during normal operation use the or buttons to adjust the time and

press the green button again to confirm any changes.

Using the Special Features

•SERVICE indicator

Note: This option only works if activated by your installer.

The 'SERVICE' indicator is displayed at set intervals as a reminder that your heating system requires a routine check. Please call your installer to arrange a maintenance visit.

The ‘SERVICE’ indicator will remain on the display of the CM721 until it is either reset or disabled by your installer. The CM721 and heating system will continue to operate as normal.

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Contents CM721 CM727 Description FeaturesCM721 User Guide Controls LayoutInstalling the Batteries SETTING-UP the CM721Setting the Date and Time Running the Built-in Heating ProgramBuilt-in Heating Program Programming the CM721Reviewing the Heating Program Modifying the Heating ProgramAdjusting the Time Choosing the Operating ModeUsing the Special Features Operating the CM721Automatic Summer/Winter Time Change How do I set one temperature for the whole day?Symptom Remedy Troubleshooting the CM721CM727 CM727 User GuideSETTING-UP the CM727 Monday to Friday Period Time 800 1000 1800 2300 Temperature 21C 16CProgramming the CM727 Operating the CM727 To set the Holiday function Using the Special FunctionsHoliday Function Service indicator optional FAQ’s Troubleshooting the CM727 An explanation for householders What is a Programmable Room THERMOSTAT?
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