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  • Siros L: User Interface | Controls | Functions | Handling

Acoustic signals & error messages - Siros L

Written by Axel Schmidt

Updated at March 16th, 2026

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                                Acoustic signals

                                 
                                Beep sound end of charging or discharging
                                Double beep energy demand above or below energy control setting via RFS 2.1 / RFS 2.2 transmitter

                                 

                                Message in display (*)

                                 
                                Fault 1
                                (F1)

                                No flash on release

                                Is the ignition wire correctly connected? Is the flash tube correctly installed? Otherwise replace flashtube. If this fault still appears, unit must be sent to Service for repair.

                                Fault 2
                                (F2)

                                Afterglow

                                Switch the unit off (wait 60 sec.) and then switch it on again. If this fault occurs repeatedly, the flash tube is defective. Please replace it with a new flash tube. If this fault still appears, unit must be sent to Service for repair.

                                Fault 3
                                (F3)

                                No charging

                                Unit must be sent to Service for repair.

                                Fault 4
                                (F4)

                                Overcharging

                                Unit must be sent to Service for repair.

                                th

                                Thermal alarm, capacitors overheated

                                A cooling phase of approximately 20 minutes starts. Do not switch off the unit! 

                                * Error messages are always also indicated by the red cognition light.

                                error message error fault f1 f2 f3 f4 th thermo afterglow

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