12
When the fifth LED indicator in the bottom row is ON (or flashing), the output in kW is indicated for the
selected output display (2.5 – 5.0 – 7.5 or 5 – 10 – 15).
Indicator continuously ON – the boiler is working as requested by the room thermostat.
Indicator flashing fast (approx. two flashes in a second) – the boiler is working as requested by the
antifreeze protection.
Indicator flashing slowly (approx. one flash in three seconds) – the boiler is heating DHW. For this purpose,
the panel shall be supplemented with the DHW module.
♦
Heating ON and OFF, winter and summer mode
When you press and hold (for more than two seconds) the
button (OFF), heating will be switched OFF –
boiler will be switched to the summer mode. In this mode, heating is not switched ON when the room
thermostat contact is connected. DHW heating is possible (if the boiler is fitted with the DHW module).
Antifreeze protection as well as protection of the pump against blocking is working. When the heating indicator
(bottom right) is OFF, it indicates that heating is OFF.
To turn on the heating, press and hold the
button (ON) – the boiler will switch to the winter mode. When
the heating indicator (bottom right) is ON, it indicates that heating is ON.
♦
Setting the required temperature (boiler thermostat) and means of control (thermostat – voltage)
When the heating water temperature is displayed, the
(OFF) and
(ON) are touch buttons. When you
press any of them for a short time (less than two seconds), the display will indicate the required output
temperature or Ui if the output temperature control with analogue control voltage at the Ui input is set.
You can change the data on the display with the arrow keys. When the °C LED indicator is flashing, it
indicates the mode in which the required value is shown and set.
The required temperature can be changed from 20 to 80°C (the limits can be adjusted in the service menu).
By pressing the
(OFF) button when the lowest value is shown, you will switch to Ui (analogue voltage
control). The value set can be confirmed by pressing the
button.
The settings will be stored automatically
after ten seconds from the last time any of the
(OFF) or
(ON) buttons was pressed even if you do not
press this button. In both cases, the display will return to the indication of the actual temperature of heating
water.
♦
Indications and error messages
When the LED ERR indicator situated on the right under the display is flashing, it indicates an error. In case
of an error, the LED ERR indicator is flashing no matter what parameter is displayed.
When you select the error number to be displayed (with the SELECT button) and there is no error, the LED
ERR indicator will be ON and dashes (--) will be shown on the display. If there is an error, the LED ERR
indicator will be flashing and the display will indicate the error number in the form of E.X, where X is the error
number. Errors which can be diagnosed are provided in the following table.
Error code
Meaning
E.2
LOW PRESSURE (< 0.5 bar)
E.3
OVERHEATING (water temperature > 95°C)
E.4
FAILURE OF THE HEATING WATER TEMPERATURE SENSOR
(short-circuit or interruption)
E.6
EMERGENCY THERMOSTAT RESPONSE
E.9
PRESSURE SENSOR FAILURE
If several errors occur simultaneously, they are shown on the display one by one in turn, approx. one second
apart.
