Detector Fault / Warning Message Display; Detector Fault / Warning Operation; Reflex™ Cell Fault Diagnosis - Honeywell 3000 MkIII Series Technical Manual

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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