Fault Finding
Lock-out diagnoses
In case of a failure the LED is permanently illuminated. Every 10 seconds the illumination is interrupted by a flash code
which indicates the cause of the error. Therefore the following sequence is performed which is repeated as long as the
unit is not reset.
Sequence:
Stray Light Monitoring
The stray light check is performed as the end of the pre-purge time for the duration as mentioned in the table of timings.
Low-voltage protection
at 220 / 240V nominal voltage
The mains voltage has to be more than 187V
eff
(94V
eff
) in order to allow the unit to perform a start-up.
The mains voltage is not only monitored in the start-up phase but also permanently during operation. If the voltage drops
below <160V
eff
(80V
eff
) during start-up or run time the control box goes into lock-out mode. If the voltage rises again, the
control box performs automatically a start-up as soon as the mains voltage is >187V
eff
(94V
eff
)
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