TM204
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Issue 1.1
Internal controls on detection part of control panel
9.2
Extinguishing Modules
9.2.1
Watchdog Reset
If the microprocessor on an extinguishing module fails to carry out its operation correctly it will attempt to
restart. If a watchdog event occurs, the extinguishing module will show Fault and System Fault LEDs
along with CPU fault. The detection module will show a fault and the panel buzzer will sound.
This fault can only be cleared by pressing the Watchdog Reset button on the extinguishing module. The
control panel buzzer will continue to sound until the watchdog activation is reset
.
9.2.2
Processor Reset
If the microprocessor on an extinguishing module fails to run correctly it can be reset by pressing the
Processor Reset button inside the control panel.
This should not normally be necessary but should be done as a matter of course if the system is
behaving abnormally. The system should resume normal operation within a couple of seconds of
pressing the processor reset button.
9.2.3
Terrminate Extinguishing
Once the extinguishing outputs have been operated they can not be switched off until after the reset
inhibit timer has elapsed. For test purposes a terminate extinguishing button is provided which will
terminate operation of the extinguishing outputs and allow the system to be reset.
W/ DOG
RESET
RESET
WRITE
ENABLE
PROC
.
