TROUBLESHOOTING THE CM727
Symptom |
|
| Remedy |
| ||
Blank Display (Power Loss). | Check batteries are installed by removing the battery | |||||
|
|
| cover. |
| ||
|
|
| Check batteries have been installed in the correct | |||
|
|
| orientation. |
| ||
|
|
| Replace the batteries. | |||
|
|
|
|
| ||
Display shows flashing | The batteries in the thermostat are low on power | |||||
symbol. |
|
| - Replace the batteries. | |||
|
|
|
| |||
Display shows |
| symbol. | A fault has occurred in your heating system. Remove | |||
| ||||||
|
|
| and | |||
|
|
| If the |
|
| symbol does not clear after a few minutes |
|
|
|
| |||
|
|
| contact your installer. | |||
|
| |||||
Display shows the word 'SERVICE' | 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. | |||
|
| |||||
BDR91 red LED is constantly on | RF communication lost due to the wrong location of | |||||
or flashing |
|
| 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. | |||
|
|
|
|
|
|
|
15