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Instruction 24-9351
PCA
7.3 Troubleshooting Guide
The following table lists the causes and remedies for most of the problems
that may arise with the analyzer. For help with any problem not dis-
cussed here, contact your nearest Bacharach Service Center.
TABLE 7-1. TROUBLESHOOTING GUIDE
Fault Probable Cause & Remedy
Analyzer completely nonfunctional;
won’t turn on when the key is
pressed.
Display Screen is blank when ana-
lyzer is turned on, but pump runs
during warmup cycle.
LOW BATTERY message appears
at bottom of display.
O2-SENSOR ERROR code ap-
pears in the Sensor Status Screen.
a. Batteries dead. Replace batteries
per Section 3.2.
b. Loose battery connector. Disas-
semble analyzer and ensure that
the battery connector is attached
to the printed circuit board.
c. Microprocessor needs to be reset.
Press RESET button (Fig. 4-7).
d. Optional Power Supply defective.
Replace Power Supply.
e. Analyzer defective. Return to
Bacharach for repair.
a. Microprocessor needs to be reset.
Press RESET button (Fig. 4-7).
b. Analyzer defective. Return to
Bacharach for repair.
Batteries close to being discharged.
Analyzer will run for several min-
utes before the instrument shuts off.
Replace batteries per Section 3.2.1.
a. Calibration was attempted while
sampling combustion gases.
b. O
2
sensor is either expired, not
wired correctly, or not connected to
the circuit board. Replace or check
wiring of sensor per Section 6.6.
7-3
Troubleshooting