Displayed information

Table 13 clarifies the meaning of all the display symbols. The symbols signal various states of the integrates room temperature controller or the controller extension and the display operation.

Icon Meaning

— "Comfort" operating mode active.

Can flash when setting the operating mode in the second operating level.

– "Standby" operating mode active.

Can flash when setting the operating mode in the second operating level.

˜ "Night" operating mode active.

Can flash when setting the operating mode in the second operating level.

™ "Frost/heat protection" operating mode active. Flashes on frost alarm (TRoom <= + 5 °C).

š The controller is in dew point operation. The controller is thus disabled.

—˜ A "Night comfort extension" is active.

—

™

A "Frost/heat protection comfort extension" is active.

¢ The controller uses this symbol to signal that heating energy is being fed to

the room (Heating command value > 3%). If only "+" is lit, the controller is in heating mode without requesting heating energy.

This symbol is also visible in the second operating level for setpoint temperature settings for heating operation.

£ The controller uses this symbol to signal that cooling energy is being fed to

the room (Heating command value > 3%). If only "-" is lit, the controller is in cooling mode without requesting cooling energy.

This symbol is also visible in the second operating level for setpoint temperature settings for cooling operation.

œ A button disable is active.

Ÿ In the basic display, the room temperature is shown in the display.

• In the basic display, the outdoor temperature is shown in the display.

1...7 Weekday display

1=Mon, 2=Tue, 3=Wed, 4=Thu, 5=Fri, 6=Sat, 7=Sun

- This symbol is active if a value change should be made in the negative direction. It is always displayed together with the "+" symbol.

+ This symbol is active if a value change should be made in the positive direction. It is always displayed together with the "-" symbol.

OK This symbol is active if, in the second operating level, a menu selection is possible using the neighbouring display button.

It is always displayed together with the ¨ symbol.

¨ This symbol is active if, in the second operating level, menu navigation is possible using the neighbouring display button.

It is always displayed together with the "OK" symbol.

Table 13: Meaning of the display symbols

Display information

In addition to the symbols, it is possible to use the numeric display to show up to four display functions in the display. This means that is possible to display the time and day, the setpoint temperature, the actual temperature or the outdoor temperature.

In the ETS, it is possible to configure which of this information is actually shown in the display.

Firstly, it is necessary to specify how much display information should be shown. For this, the parameter "Amount of display information" in the "Display" parameter node should be set to the required number (1...4). For each piece of display information, additional parameter nodes are then shown in the ETS. In the parameter nodes of the display information, the parameters

"Display information 1...4" can be configured further to specify whether the time and the day, the setpoint temperature, the actual temperature or the outdoor temperature is displayed as

information.

The information is shown separately on the display. It is possible to switch between the

information automatically after set times or in controlled manner using a communication object (see chapter 4.2.4.6.2. Display control).

picture 50: Possible display information of the display (22) Time and day display

(23) Actual temperature display (lights up together with the symbol Ÿ) (24) External temperature display (lights up together with the symbol •) (25) Setpoint temperature display

Display of temperature values

The room temperature reading has a resolution of 0.1 °C and covers a range from -99.9 °C to +99.9 °C. The reading will refresh as soon as the determined room temperature changes within the resolution interval. Should the room temperature reach or go below + 5 °C, the symbol ™ also flashes in the display as a temperature alarm.

The outside temperature reading has a resolution of 0.1 °C and also covers a range from -99.9 ° C to +99.9 °C. The temperature display will refresh as soon as a temperature value telegram is received via the "Outdoor temperature" object. After a device reset, the display shows "---" until a telegram is received. If configured, the outside temperature will only be read on the display and cannot be used for any further temperature or variable calculation in the controller.

The setpoint temperature is displayed as an absolute temperature value. The currently adjusted setpoint temperature of the active operating mode is displayed. The device always rounds the display to half degrees and shows the rounded-off temperature in the display. Its possible temperature range depends on the configured mode and is given by the fixed values for the frost and/or heat protection temperature. The reading will refresh once a new setpoint

temperature for the controller results (e. g. from a change of the operating mode or of the basic setpoint, etc.).

Display of time information

The device possesses an internal clock, set using a communication object. The internal calculation of the current time is primarily influenced by the scope of the internally planned functions and the resulting data traffic. This may cause particularly large time deviations. For this reason, the internal clock should be synchronised on a regular basis. We recommend using, for example, an external KNX/EIB clock with DCF 77 receiver, to set the clock once an hour via the bus and thus keep the deviations as small as possible. The weekday information is provided by the received time signal.

After a device reset, the display shows "--:--" until a time signal is received. The same reading will appear unless the internal clock has been updated via the bus at least once a day (updating check at 4:00 a.m.). In both cases, the time is invalid until the first or a new time telegram is received.

If the time is invalid, an optional automatic time poll can take place. For this, the "Request time"

parameter in the "General" parameter node of the ETS can be set to "Yes". In this case, if the time information is invalid, the device will request time once only by sending a read telegram to

been unloaded by the ETS, "nP" is signalled in the display.

4.2.4.6.2 Display control