SERIES 3000 MKIII TECHNICAL MANUAL
13. Detector fault / warning message display
The table below shows the warning / fault codes, their meaning and recommended action.
Warning / Fault
Code
Warnings
W01
W02
W03
Faults
F01
F02
F03
F04
F05
F06
F07
F08
F09
F10
F11
13.1 Detector fault / warning operation
Faults are signalled via the code on the display and 3mA (default) output. If the condition causing the
fault clears the 4-20mA returns to normal operation, but the display will continue to indicate the fault
code. This allows the user to see the code before using '' (>2 seconds and <5 seconds) to clear the
code from the display.
Warnings are signalled via the code on the display. Warnings do not affect the mA output of the detector*.
If the condition causing the warning clears, the display will continue to show the warning code until user
uses '' to clear the code from the display.
Any faults or warnings where the condition causing it still exists cannot be cleared.
*Note: The calibration due warning can be configured to produce a fault output (see section 12 for
further details).
13.2 Reflex™ cell fault diagnosis
Series 3000 MkIII employs the patented Reflex™cell fault diagnosis routine. Reflex™ checks for cell
presence, cell dry out and cell open or short circuit. In the event of an electrochemical cell failing this test,
the sensor fault code is displayed. Reflex™ is automatically initiated by the transmitter at 8 hourly intervals.
It is also initiated on power up, sensor exchange or sensor cell exchange.
Note: Regular response gas checks and calibrations should still be carried out. Reflex™ is not used
on Nitric Oxide or Oxygen cells.
Description
Sensor operating temperature limits
exceeded.
Calibration overdue.
Transmitter temperature limits exceeded. Use '' to clear when within limits
Sensor / transmitter comms failure
Cell failure
Zero drift (>5% of scale)
No sensor detected
Sensor EEPROM corrupted
Low supply voltage
Comms monitoring failure
RAM read / write fault
Flash memory corrupted
Flash code memory corrupted
DAC output mismatch
Use '' to clear when within limits
Re-calibrate detector. Disable warning
Replace sensor
Replace sensor
Re zero / calibrate
Replace sensor
Replace sensor
Check supply voltage.
Replace detector.
Use '' to clear. Replace detector.
Cycle power to detector.
Replace detector
Replace detector
Replace detector
Cycle power to detector.
Replace detector
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