Endura APA592
pH / Redox (ORP) transmitter
8 Troubleshooting and Diagnostics
74
OI/APA592–EN Rev. E
M026.024
Non-volatile
memory burn error
Writing to the electronic non-Volatile
Memory was not successful.
[ELECTRONICS]
Replace the electronics as soon as possible.
M052.037
Sensor diagnostic
signal input error
[Glass diag signal
input error]
Glass diagnostic signal related
sensor board electronics
malfunction.
[ELECTRONICS]
If the sensor does not support diagnosis, disable
the sensor diagnosis feature – see page 63.
If the problem persists, contact factory.
M054.012
High reference
electr. impd.
Reference electrode impedance is
higher than the user set limit
[SENSOR]
Verify sensor wiring.
Verify sensor wiring is free of nicks, cuts, breaks
and/or open connections.
Verify configuration settings are correct.
Ensure diagnostics is set to OFF if the sensor
does not have a solution ground connection.
Verify reference electrode is clean.
Remove any foreign material.
Verify sensor responds to pH buffers.
M056.002
Ref impedance
input error
Sensor reference diag signal related
sensor board electronics
malfunction.
[ELECTRONICS]
Contact factory.
M058.018
Snsr factory
cal data corrupt
Sensor factory calibration data
corrupt or missing.
[ELECTRONICS]
Contact factory.
Diagnostic Message
[Sub-error Message]
Possible Cause(s)
[Related Condition]
Corrective Action
Table 8.2 Diagnostic Messages (Continued)
