
Instruction 24-94487-2
Troubleshooting
7.3 Error Messages Displayed After Warm-Up
If there were problems detected during warm-up, error messages that
describe the nature of the problems are displayed immediately following the
analyzer’s 60 second warm-up period.
If problems were detected, the analyzer will not automatically switch to the
Combustion Test HOLD screen after warm-up. The analyzer, however, can
still be used to perform any test that does not depend on the sensor that is
in error. Press the RUN button to manually display the Combustion Test
HOLD screen, and then continue using the analyzer.
The following is a list of the error messages that may appear following
warm-up and their suggested remedies:
Low Battery – Battery voltage is low. Replace or charge batteries per
Section 3.2.
O
2
Sensor Missing – Oxygen sensor not installed. Install oxygen sensor per
Figure 6-2 on Page 6-3.
BAD Sensors – The oxygen sensor’s output is too low and can not be
calibrated in the instrument, signifying that the sensor is depleted and
needs replaced. Refer to Section 6.3.
No Smart Sensors Installed – There are no smart sensor(s) installed.
Install sensors per Section 6.3.
Low Sensors - O2, COLO, COHigh, NO, NO2, or SO2 sensor output(s)
were low but still usable. Sensor(s) may need to be replaced in the near
future. Message will indicate which sensor(s) are in warning.
T-STK Disconnected – The probe’s thermocouple is not connected to the
analyzer’s T-STACK connector. Plug the probe thermocouple plug into the
T-Stack connector at the bottom of the instrument.
Warmup Sensor Error - COLO, COHigh, NO, NO2, or SO2 Gas sensor(s)
were not zeroed at warmup because of high output. Run instrument on
fresh air then restart instrument to re-zero sensor(s). If message persists,
sensor(s) may need to be replaced. Message will indicate which sensor(s)
are in error.
Stack or Air temperature channel is measuring temperature outside
the range of -4 to 212 F at startup. Make sure that the Stack and Air
thermocouples are sampling ambient room air within the temperature
range at startup. Message will indicate which channel(s) are in error.
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