13.4.15 Error 22 (UH): Converter under Temperature
Possible reason Solution
Ambient temperature is lower than -10 °C
Provide a reasonable ambient temperature that frequency
converter requires
Temperature sensor defect Contact with service
13.4.16 Error 23 (FF): Fan Failure
Possible reason Solution
Fan defect Contact with service
13.4.17 Error 24 (Pdr): Pump Dry
Possible reason Solution
PID feedback is excessively low while con-
verter is running at output frequency high
limit
● Check if the feedback signal is valid
● If the PID control is used for controlling a water pump,
check if the pump is running without water
13.4.18 Error 25 (CoL-): Command Value Lost
Possible reason Solution
Command value lost Contact with service
13.4.19 Error 30 (OL-2): Motor Overload
Possible reason Solution
Motor locked Prevent motor lock
Normal motor runs long time with large
load at low speed
● Increase frequency converter output frequency
● Reduce load
● Use variable frequency motor or set zero speed load
(C1.76) to a higher value
● Set correct motor thermal model protection time con-
stant (C1.74)
Low mains voltage Check input power supply
Wrong settings of V/f curve related param-
eters
Adjust settings of V/f curve related parameters
Excessive sudden load change Check load
Wrong input of rated motor current Correct rated motor current in (C1.07)
Multiple motors are driven by one frequen-
cy converter
Connect only one motor to the frequency converter
Bosch Rexroth AG
Diagnosis
EFC x610 Series
246/389
DOK-RCON03-EFC-X610***-IT05-EN-P
To Next Page
Loading...
Need help?
General
