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Instruction 24-9351
PCA
“- - - -” appears in one or more value
fields of the Combustion Test Screen.
“XXXX” appears in one or more value
fields.
Analyzer won’t respond when a
panel key is pressed.
Pump motor sounds sluggish, stalls,
or won’t start.
7-5
TABLE 7-1. TROUBLESHOOTING GUIDE (Cont.)
Fault Probable Cause & Remedy
Troubleshooting
a. The analyzer is not able to calcu-
late a numerical value based on
measured combustion data. The
“- - - -” is replaced with numerical
values when the analyzer begins
to detect valid combustion data.
b. Sensor in error during warm-up.
The field’s associated sensor is de-
tecting a value that is outside the
analyzer’s detection range. “XXXX”
is replaced with numerical data
when the analyzer detects values
that fall within its range.
Microprocessor needs to be reset.
Press RESET button (Fig. 4-7).
a. Flow restricted. Check that the
filter element in the Water Trap/
Filter Assembly is clean and not
saturated with water. Also, verify
that the probe hose tubing is not
pinched (Fig. 6-3).
b. Flow restricted. Check the Par-
ticulate Filter is clean and not
blocked (Fig. 6-2).
c. Loose pump connection. Disas-
semble analyzer and ensure that
the pump connector is securely
attached to the circuit board
d. Pump defective. Replace pump
assembly.