Page 23
ZONESENSE DH4
OPERATORS MANUAL
Reset from Fire Alarm Condition
Enter the password to access level 2 and press the Reset button.
7.3 Fault
Condition
The FACP enters the fault condition when any received signals are interpreted as a fault.
The FACP recognises the following faults;
Individual zone circuits
Short or open circuit on the alarm outputs
Fault with the power supply – loss of mains power, loss of batteries, low battery voltage
condition ( 21.6VDC without mains available) and high charger voltage ( 28.8VDC )
System fault – operational main board processing, correct cabling, address setting and
monitoring of any ancillary modules connected to the system
Short circuit on the auxiliary power output
The FACP recognises all sources of faults within 10 seconds.
The FACP can be prevented from detecting a fault condition under the following conditions;
Presence of a fire alarm condition on the zone circuit
Disablement of a zone circuit
Testing of a zone circuit
Activation of the alarm outputs
Disablement of the alarm outputs
Disablement of the door holder outputs
Indication of the Fault Condition
The presence of fault conditions are automatically indicated without manual intervention by;
The common fault indicator
The individual fault indicator for each zone. For fault conditions the individual indicators are
flashing.
For alarm output faults, the alarms status indicator is flashing.
For faults with the power supply, the power fault indicator is illuminated.
For system fault, the system fault indicator is illuminated.
For a short circuit fault on the auxiliary power output, the auxiliary power fault indicator is
illuminated.
For all faults the buzzer will sound. The buzzer can be silenced by the silence buzzer control. The
buzzer will resound for any new fault condition.
Reset from the Fault Condition
Except for a System Fault, which has to be manually Reset, all faults are automatically cleared on
clearance of the fault.
