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Manual Honeywell CM901

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  • Honeywell CM901 - page 1

    CM901 - User Guide 1 day Pr ogrammable Room Thermostat Honeywell Control Systems Ltd. Arlington Business Park, Bracknell Berkshire RG12 1EB T echnical Help Desk: 08457 678999 www .honeywelluk.com 42010943- 1 03 R1 © 2005 Honeywell International Inc. Description The Honeywell CM901 is a programmable r oom thermostat designed to control your heating ...

  • Honeywell CM901 - page 2

    Contents GETTING ST ARTED WITH THE CM901 STEP 1: Installing the Batteries ......................................... 3 STEP 2: Setting the Date and Time................................... 4 STEP 3: Running the Built-In Heating Program ................ 4 PROGRAMMING THE CM901 The Built-in Heating Program............................................ 5 ...

  • Honeywell CM901 - page 3

    3 This section shows you how to setup and run the thermostat in 3 simple steps: STEP 1: Installing the Batteries Note: Please follow the instructions in this section only if the thermostat screen is blank (no symbols or digits are displayed). If the screen displays some infor mation move on to STEP 2: Setting the Date and Time. T o install the Batt ...

  • Honeywell CM901 - page 4

    4 5 STEP 2: Setting the Date and Time T o set the Date and Time: a. Move the slider switch to the D A TE position. ‘SET THE DA Y’ will be displayed on the screen and the day digits will be ashing. b. Use the or buttons to set the correct day . When either of these buttons are pressed ‘DA Y OK?’ will be displayed. Once the correct day is ...

  • Honeywell CM901 - page 5

    4 5 PROGR AMMING THE CM90 1 The Built-in Heating Program The built-in heating program has 6 temperature level changes that can be set between 3.00am and 2.50am - allowing you to maintain the evening temperature after midnight. Each temperature level can be set between 5°C and 35°C, and adjusted in 0.5°C increments. The factory default program fo ...

  • Honeywell CM901 - page 6

    6 7 PROGR AMMING THE CM90 1 b. T o adjust the period start time pr ess the or buttons and ‘TIME 1 OK?’ will be displayed. Holding the button down will change the time quickly . Note: If you ar e pressing the or buttons and the display ashes the next change period, it means the next change will be pushed forward if you continue to press or bu ...

  • Honeywell CM901 - page 7

    6 7 PROGR AMMING THE CM90 1 Disabling / Enabling Time P eriods The thermostat has 6 periods that can be programmed, but you may not need all of these switch points for your heating requirements. Ther efore, any period from 2 to 6 can be disabled or enabled as follows: T o disable time periods: Go to the desired period ( 2 to 6 ) by moving the slide ...

  • Honeywell CM901 - page 8

    8 9 OPERA TING THE CM90 1 Choosing the Operating Mode The ther mostat can operate in three different modes: Automatic, Manual or Off. T o set the operating mode move the slider switch to the desired position. The screen indicates which mode is currently active by displaying A UTO , MAN or OFF . • A UTO (automatic) mode Automatic mode sets the the ...

  • Honeywell CM901 - page 9

    8 9 OPERA TING THE CM90 1 • T emperature Override During normal operation ( AUT O mode) the programmed temperature can be adjusted manually by pressing the or buttons. The ‘target‘ temperature will be displayed and ash for 5 seconds – during this time the or buttons can be used to modify the set value. Note: This temperature override is ...

  • Honeywell CM901 - page 10

    1 0 1 1 FINE TUNING THE CM90 1 Changing the User P arameters The user mode allows you to modify some basic settings of the ther mostat to meet your personal preferences. Y ou can change the time display format (24hr or AM/PM), reset the heating pr ogram to the built-in settings and disable or enable the summer/ winter time change feature. T o chang ...

  • Honeywell CM901 - page 11

    1 0 1 1 FINE TUNING THE CM90 1 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 ash, indicating a change has been made. T o c ...

  • Honeywell CM901 - page 12

    1 2 1 3 How do I change the batteries on the CM901 when they run out? The ther mostat constantly monitors the batter y power level, which typically last for about 2 years before needing replaced. When the power is running low a ashing symbol will be displayed on the screen. T o change the batteries follow the steps in the above section (‘ STEP ...

  • Honeywell CM901 - page 13

    1 2 1 3 F A Q’ s & TROUBLESHOO TING Can I use my CM901 to contr ol my air -conditioning system? Y es, if your system has been set up correctly you can use your thermostat to contr ol the cooling. T o switch the thermostat between heating and cooling modes press the or buttons together for 5 seconds in any of the product operating modes ( A UT ...

  • Honeywell CM901 - page 14

    1 4 1 5 F A Q’ s & TROUBLESHOO TING What other accessories can I buy that w ork with the CM901? 1. Outside T emperature Sensor Accessory The Outside T emperature Sensor accessory can be tted to your ther mostat to display the outside temperature. By pressing the button twice, the thermostat displays the external temperature. 2. Remote T em ...

  • Honeywell CM901 - page 15

    1 4 1 5 T roub leshooting Guide Symptom CM901 has a blank LCD screen CM901 shows a ashing symbol on the LCD screen The CM901’ s LCD screen works but the heating does not switch on Heating switches ON or OFF too slowly or quickly T emperature swings between too hot and too cold. CM901 shows a ashing symbol on the LCD screen P ossible Cause B ...

  • Honeywell CM901 - page 16

    1 6 1 7 ...an explanation f or householders A programmable room ther mostat is both a programmer and a room thermostat. A programmer allows you to set ‘On’ and ‘Off’ time periods to suit your own lifestyle. A room ther mostat works by sensing the air temperature, switching on the heating when the air temperature falls below the thermostat s ...

  • Honeywell CM901 - page 17

    1 6 1 7 The time on the programmer must be correct. Some types have to be adjusted in spring and autumn at the changes between Greenwich Mean Time and British Summer Time. Y ou may be able to temporarily adjust the heating programme, for example, ‘Override’, ‘Advance’ or ‘Boost’. These are explained in the manufacturer’ s instructions ...

  • Honeywell CM901 - page 18

    1 8 42010943- 1 03 R1 ...

Manufacturer Honeywell Category Thermostat

Documents that we receive from a manufacturer of a Honeywell CM901 can be divided into several groups. They are, among others:
- Honeywell technical drawings
- CM901 manuals
- Honeywell product data sheets
- information booklets
- or energy labels Honeywell CM901
All of them are important, but the most important information from the point of view of use of the device are in the user manual Honeywell CM901.

A group of documents referred to as user manuals is also divided into more specific types, such as: Installation manuals Honeywell CM901, service manual, brief instructions and user manuals Honeywell CM901. Depending on your needs, you should look for the document you need. In our website you can view the most popular manual of the product Honeywell CM901.

Similar manuals

A complete manual for the device Honeywell CM901, how should it look like?
A manual, also referred to as a user manual, or simply "instructions" is a technical document designed to assist in the use Honeywell CM901 by users. Manuals are usually written by a technical writer, but in a language understandable to all users of Honeywell CM901.

A complete Honeywell manual, should contain several basic components. Some of them are less important, such as: cover / title page or copyright page. However, the remaining part should provide us with information that is important from the point of view of the user.

1. Preface and tips on how to use the manual Honeywell CM901 - At the beginning of each manual we should find clues about how to use the guidelines. It should include information about the location of the Contents of the Honeywell CM901, FAQ or common problems, i.e. places that are most often searched by users in each manual
2. Contents - index of all tips concerning the Honeywell CM901, that we can find in the current document
3. Tips how to use the basic functions of the device Honeywell CM901 - which should help us in our first steps of using Honeywell CM901
4. Troubleshooting - systematic sequence of activities that will help us diagnose and subsequently solve the most important problems with Honeywell CM901
5. FAQ - Frequently Asked Questions
6. Contact detailsInformation about where to look for contact to the manufacturer/service of Honeywell CM901 in a specific country, if it was not possible to solve the problem on our own.

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