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Fault Finding of Smoke Detector Faults
General Information
Max. 6 smoke detectors are connected to one smoke detection panel or to one
extension unit. Each smoke detector has a DIP-switch on its rear side to assign its ID-
no. Note that only the values 1 – 6 are allowed ( also in the extension units with higher
line nos. ! ). The indication of a smoke detector on the LC-Display depends on its ID-
No. and its position in the smoke detection panel or in a extension unit. The smoke
detectors in the smoke detection panel will be displayed as "Smoke Detector Line -1-"
up to " Smoke Detector Line -6-". The smoke detectors in the extension unit no.1 will
be displayed as "Smoke Detector Line -7-" up to " Smoke Detector Line -12-" and so
on.
Electrically up to 6 smoke detectors are connected in one line to one detector interface
module via a zener barrier for intrinsically safe operation.
Fault Indication: "FAULT Smoke Detector Line -x-"
Please check the following:
• Smoke detector in line "x" is inserted in its base.
• Smoke detector in line "x" has the correct ID-no.
• The ID-No. of this smoke detector has not been assigned to any other smoke
detector in this smoke detection panel / extension unit
Fault Indication: "FAULT Smoke Detector Dirt in Line -x-"
The smoke detector in line "x" is dirty. Please refer to the instruction: "Cleaning of
Smoke Detectors" on the next page.
No Fire Indication, but Smoke is present
• Ensure that approriate detector interface module is working. For example: If
"FAULT Data Transfer Device -1-" is indicated, no Fire alarm or airflow fault
from line 1 - 6 can be transmitted.
• Check setting of the lower rotary switch on the detector interface module. If 6
smoke detectors are connected to the detector interface module, the lower rotary
switch must be adjusted to "6".
Alarm Indication: "FIRE Line -x-", but no smoke is present
Check the setting of the ID-Nos. of all smoke detectors in the panel. The ID-No. for
line "x" might be assigned to more than one smoke detector.
Fault Finding Instructions SDS26
16.06.09
safetec
Seite 9 von 13
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