0x2388
SL-PSM stall detection active
Lenze · i550 protec Drive
What does 0x2388 mean?
This trouble code signifies an overload of the motor under sensorless control for synchronous motors (SL-PSM). When active, the inverter immediately disables, and the motor will coast.
Source: Lenze i550 protec Drive
Open Manual (Page 615)