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Section 10 – Troubleshooting Guide
Symptoms
Possible causes and cures
1) Control Unit
Display blank, Mains LED off – unit totally
“dead”.
No power supply to unit.
Check connectors to mains and rechargeable
battery.
Check control unit fuses F-AC & F-AUX.
Display blank, Mains LED flashing. Mains supply off, unit operating from
rechargeable battery.
Check all connections and fuses.
Check control Unit fuse F-AC.
When power is applied, internal siren sounds and
display shows .
Siren box tamper fault.
Check all connections, ensure that siren tamper
switch is fully closed by contact with wall and
that siren cover is firmly fastened.
When power is applied, internal siren sounds and
display shows .
Tamper fault on wired detectors.
Check all wiring to connector strip.
No responses to cordless detector transmissions. Are detectors programmed into control unit
correctly?
Are detectors within radio range of the control
unit?
Control unit not armed or not in walk test mode.
Unit shows “low battery” and a zone number on
the display.
Low battery condition in zone indicated – replace
batteries as soon as possible.
Unit will not arm, gives “error” tone and displays
a zone number.
Indicated zone is open or still transmitting.
Check that all zones are clear (door/windows
closed, no movement near PIRs) and try again.
2) Wireless PIR detector
Does not detect movement (red LED does not
flash).
Is PIR’s LED turned off?
Is the PIR in its “sleep” condition? (Section 3.12)
Walking in front of the PIR causes an internal
“Tamper” alarm at the control unit.
PIR tamper switch open.
Check that PIR cover is correctly fitted and
securely fastened.
PIR causes false “intruder” alarms. Check that PIR is not pointed at heat sources or
moving objects, and is not mounted above a
radiator or other heater.
PIR will not trigger alarm when the system is set. PIR in walk test mode.
3) Wireless Magnetic Contact Detector
Does not detect opening of door or window (red
LED does not flash).
Check that batteries are correctly installed.
Check that magnet is correctly positioned
Opening of door/window causes an internal
“Tamper” alarm at the control unit.
Detector tamper switch is open. Check that
tamper switch spring is pressed firmly against
mounting surface and that detector is located
securely on backplane.
4) External Siren/Strobe
Siren does not sound during test or full alarm. Check all siren wiring and connections
Check control unit fuses F-BELL.
Strobe does not flash during test or full alarm. Check all siren wiring and connections
Check control unit fuses F-STROB.
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