HYDAC EDS 300 - Manual (Page 9)

8. Error messages
If an error is detected, then a corresponding error message appears which must be
acknowledged by pressing any key. Possible error messages are as follows:
E 01 The switching points and hystereses have been set in such a way that the
resulting switch-back point is no longer within the permissible setting range.
Corrective action: Correct the settings
E 10 A data error has been detected in the saved settings. Possible causes are strong
electromagnetic interference or a component fault.
Corrective action: Check all the settings (programming enable, switching points,
switch-back points and basic settings) and correct these if
necessary. If the errors occur frequently, please contact Hydac
Service.
E 12 An error has been detected in the stored calibration data. Possible causes are
strong electromagnetic interference or a component fault.
Corrective action: Switch the unit off and on again. If the error message is still
displayed, the unit must be returned to the manufacturer for re-
calibration or repair.
E 20 A short-circuit has been detected on a switching output.
Corrective action: Eliminate the short circuit.