ABB Endura AZ series User Manual page 87

Endura AZ series integral and remote transmitter
Combustion oxygen monitor
Status Diagnostic Message
Icon Displayed
––M030.021––
TEST GAS 1 NOT
PRESENT
Check test gas
––M028.022––
TEST GAS 2 NOT
PRESENT
Check test gas
––M026.018––
SENSOR CAL.
REQUIRED
Re-calibrate
––M024.017––
SENSOR CAL.
OVERDUE
Re-calibrate
––M022.020––
MISSED SCHEDULED
ACCURACY CHECK
Check reason for
missed check.
Re-calibrate
Table 8.4 Diagnostics – Maintenance Messages (Continued)
IM/AZ20E–EN Rev. F
Possible Cause(s)
Test gas cylinder empty.
Test gas cylinder empty.
Accuracy check indicates
re-calibration is required.
Customer entered calibration
interval exceeded.
Device not in operating mode
when accuracy check was
scheduled.
8 Troubleshooting
Corrective Measure(s)
Check test gas lines.
Replace test gas cylinder.
Check test gas lines.
Replace test gas cylinder
Perform calibration.
Perform calibration.
Check reason why accuracy check
was not performed.
Perform calibration.
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