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Honeywell CM907 - page 1
CM907 - User Guide 7 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 4201094 3 - 7 03 R1 © 2005 Honeywell International Inc. Description The Honeywell CM907 is a programmable r oom thermostat designed to control your heati ...
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Honeywell CM907 - page 2
Contents GETTING ST ARTED WITH THE CM907 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 CM907 The Built-in Heating Program............................................ 5 ...
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Honeywell CM907 - 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 ...
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Honeywell CM907 - 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 ...
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Honeywell CM907 - page 5
4 5 PROGR AMMING THE CM907 The Built-in Heating Program The built-in heating program has 6 temperature level changes per day that can be set between 3.00am and 2.50am the following day - 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 f ...
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Honeywell CM907 - page 6
6 7 PROGR AMMING THE CM907 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 but ...
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Honeywell CM907 - page 7
6 7 PROGR AMMING THE CM907 i. T o exit the programming mode move the slider switch to the desired operating mode - A UTO , MAN or OFF . Note: T o run the adjusted program select the AUT O 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 ...
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Honeywell CM907 - page 8
8 9 OPERA TING THE CM907 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 ther ...
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Honeywell CM907 - page 9
8 9 OPERA TING THE CM907 • 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 c ...
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Honeywell CM907 - page 10
1 0 1 1 OPERA TING THE CM907 • P ARTY Function The party function allows you to extend your heating program by a specied number of hours at a par ticular temperature before resuming with the normal temperature program. This is especially useful when you want to maintain or increase the temperature during a special occasion such as a party or w ...
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Honeywell CM907 - page 11
1 0 1 1 OPERA TING THE CM907 • D A Y OFF FUNCTION The day off function allows you to temporarily run Sunday’ s heating program for as many days as you desire. This is useful when you have a day off during your normal week or will, unintentionally , be at home on a workday due to illness, etc. T o set the Day Off function: a. Move the slider swi ...
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Honeywell CM907 - page 12
1 2 1 3 FINE TUNING THE CM907 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 change ...
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Honeywell CM907 - page 13
1 2 1 3 FINE TUNING THE CM907 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 co ...
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Honeywell CM907 - page 14
1 4 1 5 How do I change the batteries on the CM907 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 ...
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Honeywell CM907 - page 15
1 4 1 5 F A Q’ s & TROUBLESHOO TING Can I use my CM907 to contr ol my air -conditioning system? Y es, if your system has been set up correctly you can use your ther mostat to control 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 ...
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Honeywell CM907 - page 16
1 6 1 7 F A Q’ s & TROUBLESHOO TING What other accessories can I buy that w ork with the CM907? 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 ...
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Honeywell CM907 - page 17
1 6 1 7 T roub leshooting Guide Symptom CM907 has a blank LCD screen CM907 shows a ashing symbol on the LCD screen The CM907’ 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. CM907 shows a ashing symbol on the LCD screen P ossible Cause B ...
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Honeywell CM907 - page 18
1 8 4201094 3 - 7 0 3 R1 ...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 ...
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