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10.0 CPU-95EVS DIAGNOSTICS
10.1 A diagnostic fault represents the most severe classification of problems. The
presence of a diagnostic fault will inhibit the ignition from firing. When a fault
is detected several things will occur:
n Ignition will stop firing.
n Fire Confirm Out switch will open.
n Fault Out switch will open.
n Alarm Out switch will open.
n Alarm LED in the ignition unit will turn on.
n Home status will read FAULT, and the bottom line will read PRESS DIAG.
10.2 A diagnostic warning represents the least severe classification of problems. The
ignition will continue to fire in the presence of a diagnostic warning. When a
warning is detected, several things will occur:
n Alarm Out switch will open.
n Alarm LED in the ignition unit will turn on.
n Home status will read WARNING, and the bottom line will read PRESS DIAG.
10.3 If the Alarm Out switch is being used to turn on an audible alarm or flasher, the
user can acknowledge the alarm as described below.
PRESS
ALARM
ACK
Acknowledgment of the alarm results in the following until a reset is
commanded or until another fault or warning may occur.
n Alarm Out switch will return to its closed position.
n Alarm LED will flash to indicate that an alarm is present but acknowledged.
NOTE: Diagnostic FAULTS will
supersede diagnostic WARNINGS.
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