70
Problem Possible causes Remedy
Motor does not run no mains voltage available error at customer side
(terminals 1,2,3)
internal wiring error check wiring of actuator
switching cams S1 and S2 see point 6
set incorrectly
motor blocked
use emergency manual override,
check the valve
Motor only runs in limit switch defective replace limit switch
one direction
Overload protection reacts
torque of valve too high clean and lubricate valve
(self-resetting)
duty cycle too high increase cycle time
reduce ambient temperature
Valve does not close or
switching cams S1 and/or S2 see point 6
open correctly not adjustedt
8. TROUBLESHOOTING
For service please contact the specialist at your Georg Fischer sales company.
In case an end position is not reached, the actuator shuts off automatically after
2 minutes and reports error message.
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