FAQ-02 The LED on the front of the device is flashing. What does that mean?

The LED shows the overall state of the device. Older devices have one white LED, newer ones an additional red one that flashes in its place in case of an alarm.
IndicationMeaning
Even flashingAlarm – at least one fault is pending.
Short pulse every 2.5 sStandby – all channels are switched off.
On, briefly interruptedHeating up – the device is working but has not yet reached the setpoint.
Continuously onReady – normal operation.

Keywords: LED, Display, Alarm, Status display