Troubleshooting - GF EA 21 Bedienungsanleitung

8. TROUBLESHOOTING

Problem
Motor does not run
Motor only runs in
one direction
Overload protection reacts
(self-resetting)
Valve does not close or
open correctly
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.
70
Possible causes
no mains voltage available
(terminals 1,2,3)
internal wiring error
switching cams S1 and S2
set incorrectly
motor blocked
limit switch defective
torque of valve too high
duty cycle too high
switching cams S1 and/or S2
not adjustedt
Remedy
error at customer side
check wiring of actuator
see point 6
use emergency manual override,
check the valve
replace limit switch
clean and lubricate valve
increase cycle time
reduce ambient temperature
see point 6