background image

15

Symptom

Blank Display (Power Loss).

Display shows flashing 

 

symbol.

Display shows 

 symbol.

Display shows the word '

SERVICE

'

BDR91 red LED is constantly on 

or flashing

Remedy

Check batteries are installed by removing the battery 

cover.

Check batteries have been installed in the correct 

orientation.

Replace the batteries.

The batteries in the thermostat are low on power 

- Replace the batteries.

A fault has occurred in your heating system. Remove 

and re-insert the batteries.

If the 

 symbol does not clear after a few minutes 

contact your installer.

Your installer has set a scheduled maintenance alert 

period on your CM727 as a recommendation that your 

heating system should receive a routine inspection.

Call your installer to arrange a maintenance visit.

Note: 

The CM727 and heating system will continue to 

operate as normal.

RF communication lost due to the wrong location of 

the room unit - Hook the room unit back on the wall 

bracket where RF communication was reliable.

Call installer

NOTE:

 You can control the boiler manually when the 

RF communication is lost: Press the BDR91 push 

button to switch the boiler on and off. When the green 

LED is on – the boiler is on.

TROUBLESHOOTING  THE CM727

Содержание CM721

Страница 1: ...1 CM721 2 6 CM727 7 11 USER GUIDE ...

Страница 2: ...providing comfortable temperatures when you are at home and energy savings when you are away The following instructions explain how to program and use the thermostat to provide the most home comfort at the least cost Controls Layout LCD Screen Battery Low Indicator Time Display Burner On Indicator Temperature Display 1 2 3 6 11 12 13 7 8 9 10 4 5 Battery Cover Program Buttons Time Change Buttons S...

Страница 3: ...egin setting the date When you set the date for the first time after the batteries are inserted the display will show Press the or buttons to set the current day of the month e g d 01 1st day of the month then press the green button to confirm b Press the or buttons to set the current month of the year e g m 01 January then press the green button to confirm c Press the or buttons to set the curren...

Страница 4: ...od will be pushed forward c Once the required time is reached press the green button to confirm Note If the original time setting did not require adjustment press the green button to move to step d d The temperature setting for period 1 will now be flashing To adjust this press the or buttons and confirm the setting again by pressing the green button e The next time and temperature period will now...

Страница 5: ...re To review the programmed target temperature the temperature which the thermostat is trying to maintain press the button This target temperature value will be displayed flashing for 5 seconds before returning to the current room temperature value Temperature Override During normal operation AUTO mode the programmed temperature can be adjusted manually by pressing the or buttons or the button The...

Страница 6: ...r backward by one hour for Daylight Saving Time This is carried out on the last Sunday of March and October each year Optimum Start Optimum Start is a program which ensures that the optimum temperature conditions are achieved at the required times This is an Energy Efficiency feature that adjusts the start time of your heating system depending upon how cold it is For example on cold days your heat...

Страница 7: ...clear after a few minutes contact your installer Your installer has set a scheduled maintenance alert period on your CM721 as a recommendation that your heating system should receive a routine inspection Call your installer to arrange a maintenance visit Note The CM721 and heating system will continue to operate as normal RF communication lost due to the wrong location of the room unit Hook the ro...

Страница 8: ...esigned to control your heating system efficiently providing comfortable temperatures when you are at home and energy savings when you are away The following instructions explain how to program and use the thermostat to provide the most home comfort at the least cost Controls Layout LCD Screen Battery Low Indicator Time Display Burner On Indicator Day Indicator Temperature Display 1 2 3 4 5 6 Holi...

Страница 9: ...he first time after the batteries are inserted the display will show Press the or buttons to set the current day of the month e g d 01 1st day of the month then press the green button to confirm b Press the or buttons to set the current month of the year e g m 01 January then press the green button to confirm c Press the or buttons to set the current year e g yr 06 2006 then press the green button...

Страница 10: ...onfirm the setting again by pressing the green button e The next time and temperature period will now be active Adjust this by repeating steps b d above until all 4 periods are set for Monday or press the AUTO button to run the program as set at any time You now have a choice of how to set the program for the next day 1 2 3 4 5 6 7 4 3 2 1 The Built in Heating Program The built in heating program ...

Страница 11: ...enable time periods a To disable unwanted periods go to the desired period 2 to 4 using the PROGRAM or buttons to navigate ensure the correct period is highlighted with the flashing square symbol Press and hold the button for at least 2 seconds and the display will indicate the period has been removed from the program b To enable periods again follow the same procedure as above navigating to the a...

Страница 12: ...Special Functions HOLIDAY Function The holiday function allows you to set a constant temperature default 10 C for a specified number of days from 1 99 days This lets you save energy and related costs when you are away from home but resumes normal operation on the day of your return To set the Holiday function a Ensure the thermostat is running in AUTO or MAN operating modes b Press the holiday but...

Страница 13: ...ackward by one hour for Daylight Saving Time This is carried out on the last Sunday of March and October each year Optimum Start Optimum Start is a program which ensures that the optimum temperature conditions are achieved at the required times This is an Energy Efficiency feature that adjusts the start time of your heating system depending upon how cold it is For example on cold days your heating...

Страница 14: ...the radio frequency system When the green LED is ON the boiler is also ON When the LED is OFF the boiler is OFF When do I need to use the push button You should use the push button to control your boiler only when the RF communication is lost see the Troubleshooting Guide Push button and relay status LED s This product and its associated documentation and packaging are protected by various intelle...

Страница 15: ... clear after a few minutes contact your installer Your installer has set a scheduled maintenance alert period on your CM727 as a recommendation that your heating system should receive a routine inspection Call your installer to arrange a maintenance visit Note The CM727 and heating system will continue to operate as normal RF communication lost due to the wrong location of the room unit Hook the r...

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