4.6.15 Alarms 3117 - 3204 EPC
GCP Alarm Descriptions 3117 - 3204 EPC
The following tables list the alarm number (#), type (+ information, ? warning, ! error) alarm
text, description, and actions.
# Text Description Action
3117,
3118
! Pressure [1 - 2] Out-Of-
Control on %4
EPC (Electronic Pressure Controller)
PIC: The measured pressure, on chan‐
nel #n, has exceeded the absolute maxi‐
mum allowed pressure and the corre‐
sponding channel was shutdown. The
pressure controller is no longer working.
Confirm that the flow is greater than the
minimum specification. Replace the
EPC.
3119,
3120
! A/D [1 - 2] Failure on %4 EPC (Electronic Pressure Controller)
PIC: The Analog to Digital Converter chip
does not work properly. The flag will be
set if the A/D internal calibration cycle is
not completed within a pre-determined
period of time or the A/D does not report
any valid data within a pre-defined time‐
out period.
Note: A firmware problem affecting the
version 0.250 of the EPC PIC may cause
an A/D failure flag to show-up occasion‐
ally following a PIC reset. This is not a
sign of a defective A/D converter.
Cycle power. If the error repeats con‐
sistently, replace the module.
3157,
3158
? Low Supply Pressure [1 - 2]
on %4
EPC (Electronic Pressure Controller)
PIC: Set when the contact on the optional
supply pressure sensor on [J5 or J6] is
closed indicating that the supply pres‐
sure is getting low and that the bottle
must be changed soon.
Check air supply. Replace supply bottle.
3159,
3160
! Deviation [1 - 2] Exceeded
on %4
EPC (Electronic Pressure Controller)
PIC: The measured pressure deviation
has exceeded the corresponding
MAX_DEVIATION value. The PID con‐
trol was not successful in controlling the
pressure with the desired precision on
channel #n.
MAX_DEVIATION_x that is too small.
An improper setting of TIME_LIM‐
IT_DEVIATION_UP_x or TIME_LIM‐
IT_DEVIATION_DN_x.
Insufficient supply pressure.
Flow too small or too large.
Defective EPC.
3161,
3162
? Setpoint [1 - 2] changed fol‐
lowing a change in Max
Pressure
EPC (Electronic Pressure Controller)
PIC: The SETPOINT_[n] AO value was
modified internally as a result of the SET‐
POINT_MAX_[n] AO value set to a value
lower than the SETPOINT_[n] value.
Set the SETPOINT_MAX_[n] value first
and then set the setpoint.
General Maintenance and Troubleshooting
4.6 Alarm Codes, Descriptions, and Suggested Actions
Maxum edition II Analyzer General Maintenance
Manual, August 2018, A5E42019842001 69
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