UE-1: Undervoltage during running
Possible reason Solution
Power failure during running Check input power supply
Main circuit capacitor deterioration Contact with service
UH: Frequency converter under temperature
Possible reason Solution
Ambient temperature is lower than -15 °C
Provide a reasonable ambient temperature that
frequency converter requires
Temperature sensor defect Check the motor temperature feedback signal
FHE-: Manufacturer parameter defect or mismatches with hardware
Possible reason Solution
Parameter corruption Contact with service
CE7-: 15 V power supply error
Possible reason Solution
Internal circuit failure Contact with service
EMC problem Remove the environmental interference or EMI
dir1: Rotation direction error 1
Possible reason Solution
Direction control [b1.10] = '1: Forward only'. Di-
rection command is reverse
Correct the parameter setting
dir2: Rotation direction error 2
Possible reason Solution
Direction control [b1.10] = '2: Reverse only'. Di-
rection command is forward
Correct the parameter setting
EFC 3600 Bosch Rexroth AG
Diagnosis
DOK-RCON03-EFC-3600***-IT03-EN-P
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