Installation and Operating Instruction

Operating the Controls
6.3 Controller Functions and Operating Status
In the followings sections, the control functions as well as the displays for the different
operating modes will be described.
6.3.1 Start up
� If an external Open Therm controller or set-point calculator is installed,
various settings can be made via the room controller/ set-point calculator.
Follow the unit’s description
● The symbols used here such as , are examples; they may differ
from your display!
After switching on the electrical supply, the software versions for the different components
are shown in the following order during start up:
Display Time
Software Version MMI Display 2 Seconds
Software Version CVBC (HuP) Display 2 Seconds
Software Version CVBC (LuP) Display 2 Seconds
Software Version CVBC (EEPROM) Display 2 Seconds
6.3.2 Standby Mode
In standby mode, the ignition mechanism is turned off, the gas valve is closed and
the pump turns off when the cool-down is complete. If there is no active heating demand
and no error code is displayed, the following information will be on the display.
Display Display Element
Central Heating Warm-up
Temperature
6.3.3 Flame Detector
Segment B and C
Celsius-Symbol Segment D
When there is a flame, this is shown by a point display.
Display Display Element
Flame On Point Display D
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