Honeywell Series 3000 MkII - Troubleshooting, Maintenance, and Servicing; Faults, Warnings, and Diagnostics

26
SERIES 3000 MKII TECHNICAL MANUAL S3KMKIIMAN_MAN0878_Issue 6_01/2014
13. Detector fault / warning message display
The table below shows the warning / fault codes, their meaning and recommended action.
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 congured to produce a fault output (see section 12 for
further details).
13.2 Reex™ cell fault diagnosis
Series 3000 MkII employs the patented Reex™cell fault diagnosis routine. Reex™ 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. Reex™ 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. Reex™ is not used
on Nitric Oxide or Oxygen cells.
Warning / Fault
Code
Description Action
Warnings
W01
Sensor operating temperature limits
exceeded.
Use ‘’ to clear when within limits
W02 Calibration overdue. Re-calibrate detector. Disable warning
W03 Transmitter temperature limits exceeded.
Use ‘’ to clear when within limits
Faults
F01 Sensor / transmitter comms failure Replace sensor
F02 Cell failure Replace sensor
F03 Zero drift (>5% of scale) Re zero / calibrate
F04 No sensor detected Replace sensor
F05 Sensor EEPROM corrupted Replace sensor
F06 Low supply voltage
Check supply voltage.
Replace detector.
F07 Comms monitoring failure
Use ‘’ to clear. Replace detector.
F08 RAM read / write fault
Cycle power to detector.
Replace detector
F09 Flash memory corrupted Replace detector
F10 Flash code memory corrupted Replace detector
F11 DAC output mismatch
Cycle power to detector.
Replace detector