Sumitomo E21 fault code meaning
Sumitomo / E21
Series: HF-320, SF-320
Thermal protection
AC drive
Meaning: When the temperature of the inverter module is higher, the thermal sensor in the inverter module detects the higher temperature of power chip and the inverter is cut off.
Possible causes
Source:
Series: HF430
Abnormal temperature
AC drive
Meaning: When main circuit temperature raises by stopping of cooling fan, the inverter output is switched off.
Possible causes
Source: