Instruction/ maintenance manual of the product CM721 Honeywell
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1 CM721 ..................................2-6 CM727 ................................7-11 USER GUIDE.
2 Feat ures • Ergonomicuserinterfacefeaturingan‘OK-button’. • LargeLCD(LiquidCrystalDisplay)Screen . • 4independenttemperaturelevels(from5°Cto35°C). • AutomaticSummer/WinterTimeChange.
3 SETTING-UP THE CM721 ‘ Getting Started’ This section shows y ou how to set up and run the ther mostat 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).
4 Per iod 1 2 3 4 Time 6:30 8:00 18:00 22:30 T emperat ure 21°C 18°C 21°C 16°C The Built-in Heating Pr ogram The built-in heating program has 4 temperature level changes that can be set between 3.
5 Choosing the Operating Mode The thermostatcan operatein threedif ferent modes:Automatic, Manualor Off. T oset theoperating mode press either of the A UT O , MAN or OFF buttons.
6 How do I change the batter ies on the thermostat when they r un out? The thermostat constantly monitors the battery power level, which typically lasts for about 2 yearsbeforeneedingreplaced.
7 Sympt om BlankDisplay(PowerLoss). Displayshowsashing symbol. Displayshows symbol. Displayshowstheword' SER VICE ' BDR91redLEDisconstantlyon orashing Remedy Checkbatteriesareinstalledbyremovingthebattery cover .
8 CM727 - USER GUIDE Feat ures • Ergonomicuserinterfacefeaturingan‘OK-button’. • LargeLCD(LiquidCrystalDisplay)Screen. • 7-dayheatingprogramtomatchyourlifestyle,whilst maximisingenergysavings.
9 SETTING-UP THE CM727 ‘ Getting Started’ This section shows y ou how to set up and run the ther mostat in 3 simple steps: STEP 1: Installing the Batteries Note: Please follow the instructions in this section only if the thermostat scr een is blank (no symbols or digits are displayed).
10 ‘Efficient Daily Use’ PR OGRAMMING THE CM727 Modifying the Heating Pr ogram T o change the heating program: a. Press either of the PROGR AM or buttons to enter the programming mode.
11 PROGR AMMING THE CM727 ‘Efficient Daily Use’ f. i) Pressthe COPY DA Y buttontocopyMonday’ sprogramintoT uesday .
12 During Normal Oper ation • T emperat ure Enquiry In A UTO , MAN and OFF operating modes the thermostat will display the current r oom temperature.
13 Using the Special Feat ures • SER VICE indicator (optional) 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.
14 How do I change the batter ies on the thermostat when they r un out? The thermostat constantly monitors the battery power level, which typically lasts for about 2 yearsbeforeneedingreplaced.
15 Sympt om BlankDisplay(PowerLoss). Displayshowsashing symbol. Displayshows symbol. Displayshowstheword' SER VICE ' BDR91redLEDisconstantlyon orashing Remedy Checkbatteriesareinstalledbyremovingthebattery cover .
16 50039991-00 3 A ©2009HoneywellInternationalInc. Honeywell Control Systems Ltd. Arlington Business Park, Bracknell Berkshire RG12 1EB T echnical Help Desk: 08457 678999 www .honeywelluk.com WHA T IS A PROGR AMMABLE ROOM THERMOST A T? .
An important point after buying a device Honeywell CM721 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Honeywell CM721 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Honeywell CM721 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Honeywell CM721 you will learn all the available features of the product, as well as information on its operation. The information that you get Honeywell CM721 will certainly help you make a decision on the purchase.
If you already are a holder of Honeywell CM721, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Honeywell CM721.
However, one of the most important roles played by the user manual is to help in solving problems with Honeywell CM721. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Honeywell CM721 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
