System failure

What does it mean?

Internal error of the control system.

Common causes

• Internal control system failure (often triggered by strong EMC interference or a hardware fault).

How to fix it

• De-energise completely (disconnect the 24 V supply, discharge the DC bus) and restart
• if it recurs, contact our service.

After troubleshooting: de-energise the device completely (disconnect the 24 V supply and discharge the DC bus) before opening the covers.