65-2515RK Oxygen Detector • 13
Troubleshooting
The troubleshooting guide describes symptoms, probable causes, and recommended action for
problems you may encounter with the oxygen detector.
NOTE:
This troubleshooting guide describes detector problems only. See the controller
operator’s manual for problems you may encounter with the controller.
Replacing the Oxygen Plug-in Sensor
1. Turn off the controller.
2. Turn off or unplug incoming power to the controller.
3. Unscrew the detector housing cap from the detector housing.
4. Unplug and remove the oxygen sensor.
5. Carefully plug the replacement sensor into the socket pattern that is located in the top
section of the detector housing.
NOTE:
Match the sensor’s male pins with the two female sockets as you plug the sensor into
the sockets.
Table 2: Troubleshooting the Oxygen Detector
Condition
Symptom(s)
Probable Causes
Recommended Action
Fail
Condition
• Controller indicates
a fail condition.
• The detector wiring is
disconnected or
misconnected.
• The plug-in oxygen
sensor is not properly
installed.
• The detector is
malfunctioning.
1. Verify that the detector wiring is
correct and secure.
2. Confirm that the plug-in oxygen
sensor inside the detector housing is
installed properly.
3. Calibrate the detector.
4. If the fail condition continues,
replace the plug-in oxygen sensor.
5. If the fail condition continues,
contact RKI for further instruction.
Slow or No
Response/
Difficult or
Unable to
Calibrate
• Unable to accurately
set the fresh air or
zero reading during
calibration.
• Detector requires
frequent calibration.
Note:
Under
“normal”
circumstances, the
detector requires
calibration once every
three months.
Some applications may
require a more frequent
calibration schedule.
• The calibration
cylinder is low, out-
dated, or defective.
• The plug-in sensor is
malfunctioning.
1. Verify that the calibration cylinder
contains an adequate supply of a
fresh test sample.
2. If the calibration/response difficulties
continue, replace the plug-in sensor.
3. If the calibration/response difficulties
continue, contact RKI for further
instruction.
www.calcert.com
1.800.544.2843
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