VERDER MICRODOS ME3 CL Manuel De Reglage page 15

MESSAGES FROM THE PUMP
THIS MESSAGE MEANS THAT THE CALIBRATION IS IMPOSSIBLE AND HAS TO BE
DONE AGAIN.
If after the calibration repetition the display shows again this message:
a) Check that the flow and pH conditions are right.
b) Check the connection of the probe on the pump is correct.
c) Repeat the DPD1 test and then repeat the gain calibration.
Rev 4.0 Cod. 00.008.212 15