Cause : Configuration vector for the inverter failed comes during startup the inverter checks if the configuration vector (SZL vector) has been programmed correctly and if hardware matches the programmed vector. If not the inverter will trip.

• r0949 = 1: Internal failure - no hardware configuration vector available.
• r0949 = 2: Internal failure - no software configuration vector available.
• r0949 = 11: Internal failure - inverter code not supported.
• r0949 = 12: Internal failure - software vector not possible.