PowerKon LT
PowerKon LT
Assembly, installation and operating instructions
40
9.2
Display control
Every time the power supply is switched on, the display shows “---” for 10 seconds (start mode). Then it returns to the oper-
ating mode last selected. The backlight is automatically switched off 30 seconds after the last operation on the display. The
three brightness levels of the backlight can be permanently activated using a parameter setting.
3
2
1
4
5
Fig. 11: Display
1
Display of setpoint/room temperature
2
+ button (change of setpoint and settings)
3
- button (change of setpoint and settings)
4
Fan button (1, 2, 3, Auto)
5
On/Off button
On/Off button
The On/Off button can light up in different colours, which indicate the following:
Flashing white: Demand for heating or cooling in automatic mode is not defined and/or flow temperature T2 is not
reached.
Lit red: Heating mode
Lit blue: Cooling mode
The following messages appear on the display in the event of an alarm:
Message
Flash code
Meaning
Unit status
AL1
1x flashing
Window contact
Unit stops after a delay (P22)
AL2
2x flashing
Condensate alarm
Unit stops, all outputs to Off
AL3
3x flashing
EC motor fault
Unit stops, all outputs to Off
AL4
4x flashing
T3<4°C or T3>75°C
Valve closes, fan at stage 1
AL5
5x flashing
Error T1
Unit stops, all outputs to Off
AL6
6x flashing
Error T2
Unit stops, all outputs to Off
AL7
7x flashing
Error T3
Unit stops, all outputs to Off
AL9
9x flashing
Room frost protection
Valve opens, fan stage 1
Tab. 12: Alarm messages
1. Press and hold button 2 (+) and 4 (Fan) for 10 seconds: Display shows “---” for 3 seconds.
2. While the display shows “---”, press and hold down button 4 (Fan) for approx. 5 seconds.
3. Button 5 then flashes white and the display shows the first parameter “brt”.
4. Pressing button 4 can be used to select the parameter and confirm the new value.
