Metrohm 781 pH/Ion Meter: Operation via RS-232 - Manual (Page 9)

1 General rules
780/781 pH/Ion Meter - Operation via RS232
7
E142 Electrode test failed. $S or change mode.
E143 V add too small. $S or change mode.
E144 V add too large. $S or change mode.
E145 Check working conditions. $S or change mode.
E146 Evaluation error in Mode Conc. $S or change mode.
E147 Plot data overflow. $S or change mode.
E148 Buffer unsuitable for electrode test. $S or change mode.
E152 Limit error.
E198 Validate instrument.
E199 Service is due.
E205 Calibration interval expired.
E212 Transmission error (PC keyboard
connection).
Rectify fault.
E213 Time Out PC-Keyboard. Rectify fault.