Honeywell CM901 Change the time format, Ii Reset the built-in program to the factory default

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FINE TUNING THE CM901

c.Now choose which one of the following parameters you would like to change:

i) Change the time format

‘CLOCK SELECT’ should be displayed on the screen - press the or buttons to select the preferred time format (12=AM/PM format, 24=24hr format) and the display will flash, indicating a change has been made. To confirm this change press the green button.

ii) Reset the built-in program to the factory default

Press the time button once. The display will show ‘RESET PROGRAM’.

Press the or buttons to select the preferred setting (0=user program, 1=factory program) and the display will flash, indicating a change has been made. To confirm this change press the green button.

iii) Enable or disable summer/winter time change

Press the time button twice. The display will show ‘AUTO CHANGE’. Press

the or buttons to select the preferred setting (0=disabled/Off, 1=enabled/ On) and the display will flash, indicating a change has been made. To confirm

this change press the green

button.

d.To exit the user mode move the slider switch to the AUTO, MAN or OFF position.

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Contents CM901 User Guide Controls Layout Contents To install the Batteries Installing the BatteriesTo set the Date and Time Setting the Date and TimeRunning the Built-in Heating Program Modifying the Heating Program Built-in Heating ProgramReviewing the Heating Program To press or buttons Disabling / Enabling Time Periods To disable time periodsTo enable time periods During Normal Operation Choosing the Operating ModeAdjusting the Time To set the Holiday function Using the Special FunctionsTemperature Override Holiday FunctionTo change any of these user’s parameters Changing the User ParametersChange the time format Ii Reset the built-in program to the factory defaultIii Enable or disable summer/winter time change What is Optimum Start? How do I set one temperature for the whole day?Can I use my CM901 to control my air-conditioning system? Remote Temperature Sensor Accessory Symptom Possible Cause Remedy Troubleshooting GuideAn explanation for householders What is a Programmable Room THERMOSTAT? 42010943-103 R1

CM901 specifications

The Honeywell CM901 is a highly efficient, programmable room thermostat designed for residential heating systems. This versatile device caters to the needs of homeowners by combining user-friendly features with advanced technology to ensure optimal climate control in living spaces.

One of the standout features of the CM901 is its ability to offer seven-day programming. Users can set different heating schedules for each day of the week, allowing for flexibility according to their lifestyle. This functionality is particularly beneficial for families with varying routines, enabling energy savings during times when the home is unoccupied. Users can program the thermostat to reduce heating in the mornings when they are away and ramp up the temperature just before they return home.

The CM901 supports a wide range of heating systems, including gas, oil, and electric boilers, as well as underfloor heating systems. This compatibility makes it suitable for a variety of homes and heating setups, ensuring that it can meet the unique needs of different households. Furthermore, its easy installation process allows homeowners or contractors to set it up with minimal hassle.

Equipped with an intuitive interface, the CM901 features a clear LCD display that shows the current room temperature and set point at a glance. The backlit screen enhances usability, enabling users to read the display in low-light conditions. The device also allows for manual override, making it convenient for users to adjust settings on-the-fly without interfering with their programmed schedule.

Energy efficiency is a prime focus of the CM901, as it helps reduce heating costs while maintaining comfort. Its precise temperature control and programming capabilities ensure that heating is only used when necessary, leading to reduced energy consumption. This not only benefits the environment but also helps homeowners save money on their energy bills.

In terms of build quality, the Honeywell CM901 boasts a sleek and modern design that fits seamlessly into contemporary home decor. Its durable construction ensures longevity, offering reliable service for years to come.

Overall, the Honeywell CM901 stands out as a practical solution for homeowners seeking a blend of comfort, efficiency, and ease of use in their heating systems. With its programmable features, adaptability, and user-friendly interface, the CM901 is an excellent choice for those looking to enhance their indoor climate control experience.
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