# Text Description Action
4601 ? Temperature Deviation Ex‐
ceeded on %4
Advance Adapter Temperature Control‐
ler PIC: The measured temperature de‐
viation (TEMP_DEVIATION) has excee‐
ded the corresponding MAX_DEVIA‐
TION value. The PID control did not suc‐
cessfully control the heater with the de‐
sired precision. A large deviation is nor‐
mal on power-up and immediately follow‐
ing a change in the temperature setpoint.
Only small deviations are expected dur‐
ing normal operation.
Check for these causes of temperature
instability:
Fast variation in the ambient tempera‐
ture, airflow or line voltage. Insufficient
air flow.
A temperature setpoint too high for the
allowed T-rating.
A defective DPM.
A defective Solid State relay.
4817 ! AI Underflow Fault on %4 One or more AIs on the module has en‐
countered a voltage or current underflow
situation.
Make sure that the signal going to all
AIs is within the range of the inputs.
4818 ! AI Overflow Fault on %4 One or more AIs on the module has en‐
countered a voltage or current underflow
situation.
Make sure that the signal going to all
AIs is within the range of the inputs.
4819 ! External ADC HW is not re‐
sponding on %4
Timeout or communication error with an
Analog to Digital Converter.
Reset the device.
If the problem recurs, replace the mod‐
ule.
4820 ! External AO is not calibra‐
ted on %4
One or more AO channel has an invalid
calibration record in the EEPROM of the
module.
Reset the device.
If the problem recurs, replace the mod‐
ule.
4821 ! External AI is not calibrated
on %4
One or more AI channel has an invalid
calibration record in the EEPROM of the
module.
Reset the device.
If the problem recurs, replace the mod‐
ule.
4857 ? External AI underflow on
%4
One or more AIs on the module has en‐
countered a voltage or current underflow
situation.
Make sure that the signal going to all
AIs is within the range of the inputs.
4858 ? External AI overflow on %4 One or more AIs on the module has en‐
countered a voltage or current overflow
situation.
Make sure that the signal going to all
AIs is within the range of the inputs.
5117
- 5140
! Alarm [5117 - 5140] on %4 A fault alarm was generated on an un‐
recognized I2C module.
Update to the latest software version.
Make sure that the latest text files are
loaded.
5157
- 5199
? Warning [5157 - 5199] on
%4
A warning alarm was generated on an
unrecognized I2C module.
Update to the latest software version.
Make sure that the latest text files are
loaded.
5200
- 5220
+ Note [5200 - 5220] on %4 A note alarm was generated on an un‐
recognized I2C
Update to the latest software version.
Make sure that the latest text files are
loaded.
General Maintenance and Troubleshooting
4.6 Alarm Codes, Descriptions, and Suggested Actions
Maxum edition II Analyzer General Maintenance
80 Manual, August 2018, A5E42019842001
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