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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. Only several minutes of operating
time remain. Replace or charge batteries per Section 3.2.
O
2
No Sensor – Oxygen sensor not installed, or has become unplugged from
its electrical connector. Install oxygen sensor per Figure 6-2 on Page 6-3.
O
2
BAD Sensor – The oxygen sensor’s output is below 24 mV, signifying
that the sensor is depleted and needs replaced. Refer to Section 6.3.
No Smart Sensors – No gas sensors are installed. Install sensors per
Section 6.3.
Pressure Overrange – Pressure sensor measured a pressure that was
outside the range of ±3 inwc during warm-up. Ensure that probe tip is open
to the atmosphere during warm-up.
Ts Error – The probe’s thermocouple is not connected to the analyzer’s T-
STACK connector.
Ts Overrange – The temperature measured during warm-up was outside
the range of –4 to 2,192 °F (–20 to 1,200 °C). Ensure that the probe is
correctly connected to the analyzer per Figure 3-2 on Page 3-3, and that
the probe is at room temperature during warm-up.
Ta Overrange – The temperature measured during warm-up by the
optional primary / ambient air thermocouple plugged into the analyzer's
T-AIR connector was outside the range of –4 to 212 °F (–20 to 100 °C).
Ensure that this thermocouple is at room temperature during warm-up.
UNCALIBRATED SENSORS – List of sensors that do not have a
calibration history stored on their printed circuit board. Calibrate each of
the sensors listed per Section 5.