0050
Heatsink Overtemperature
Lenze · SM29_05 Service Bulletin
What does 0050 mean?
The heatsink temperature has exceeded 85°C (displayed as OH). This condition is monitored by the MCTRL function and indicates that the drive's cooling system may be insufficient, blocked, or the ambient temperature is too high, leading to potential drive damage.
Source: Lenze SM29_05 Service Bulletin
Open Manual (Page 240)