Honeywell CM901 manual To press or buttons

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PROGRAMMING THE CM901

b.To adjust the period start time press the or buttons and ‘TIME 1 OK?’ will be displayed. Holding the button down will change the time quickly.

Note: If you are pressing the or buttons and the display flashes the next change period, it means the next change will be pushed forward if you continue

to press or buttons).

c.Press the green button to confirm the setting. ‘CHANGES SAVED’ is displayed for 1.5 seconds then ‘SET TEMP 1’ will be shown.

Note: If the original time setting did not require adjustment press the green button to move on to step ‘d.’.

d.The temperature setting for period 1 will now be flashing. To adjust this press the or buttons and ‘TEMP 1 OK?’ will be displayed.

e.Press the green button to confirm the setting. ‘CHANGES SAVED’ will be displayed for a moment followed by ‘SET TIME 2’.

f.The next time and temperature period will now be active. Adjust this by repeating steps b - e above until all 6 periods are set or move the slider switch to the AUTO position to run the program as set, at any time.

g.After setting period 6 ‘CHANGES SAVED’ will be displayed as before.

i.To exit the programming mode move the slider switch to the desired operating mode - AUTO, MAN or OFF. Note: To run the adjusted program select the AUTO mode.

Note: If the unit is left in programming mode for more than 10 minutes without the slider being moved or any buttons pressed, ‘MOVE THE SLIDER’ will be displayed. Press a button to finish programming the thermostat or move the slider to select the desired operating mode.

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Contents CM901 User Guide Controls Layout Contents Installing the Batteries To install the BatteriesSetting the Date and Time Running the Built-in Heating ProgramTo set the Date and Time Built-in Heating Program Reviewing the Heating ProgramModifying the Heating Program To press or buttons To disable time periods To enable time periodsDisabling / Enabling Time Periods Choosing the Operating Mode Adjusting the TimeDuring Normal Operation Holiday Function Using the Special FunctionsTemperature Override To set the Holiday functionChanging the User Parameters To change any of these user’s parametersIi Reset the built-in program to the factory default Iii Enable or disable summer/winter time changeChange the time format How do I set one temperature for the whole day? What is Optimum Start?Can I use my CM901 to control my air-conditioning system? Remote Temperature Sensor Accessory Troubleshooting Guide Symptom Possible Cause RemedyAn 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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