ABB Endura AZ series User Manual page 83

Endura AZ series integral and remote transmitter
Combustion oxygen monitor
Status Diagnostic
Icon Message
––F076.047––
INTERNAL COMMS
ERROR
Cycle power. If
problem persist
change cartridge
––F074.039––
OPTION NV MEMORY
FAILE
Cycle power.
Check & re-enter
configuration
––F072.002––
O2 SENSOR
OUT OF LIMITS
Address process
issue & check
wiring.
––F070.003––
TEMP SENSOR
OUT OF LIMITS
Check operating
conditions
Table 8.2 Diagnostics – Failure Messages (Continued)
IM/AZ20E–EN Rev. F
Possible Cause(s)
Temporary or permanent hardware
failure.
Failure during reading of NV memory
or permanent corruption of data.
Process oxygen concentration
beyond sensor range.
Maximum temperature range for
thermocouple exceeded.
8 Troubleshooting
Corrective Measure(s)
Switch power to transmitter off and
then on again.
If problem persists replace cartridge.
Contact local ABB service.
Switch power to transmitter off and
then on again.
Check and re-enter configuration
parameters.
Replace cartridge.
If problem persists contact local
ABB service.
Address process issue.
Check wiring.
If problem persists contact local
ABB service.
Check operating conditions.
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