Structure and function
28
Building Technologies 007004_k_en_--
Fire Safety & Security Products 16.04.2009
Information displayed on the
detector exchanger and
tester
Meaning Measures
'No deviation' Normal, no fault is present
The detector is fully functional
None
'maybe excha.'
1
Observe information
The detector is fully functional
z FDOOT:
– Slightly soiled
Check cause during periodic maintenance
'advice excha.'
1
Replacement recommended
Detector is still functional, in spite of minor
problems
z FDOOT:
– Average soiling
– Untypical sensor values caused by
environmental influence
z FDO:
– Average soiling
z Remedy the cause during the next
maintenance
z Replace detector if necessary
'needed excha.'
1
Replacement necessary
Detection possibly restricted; alarming is
still possible
z FDOOT:
– Heavily soiled, failure of one optical
sensor
– Failure of one or both thermal sensors
z FDO:
– Heavily soiled
z Call maintenance service
z Replace detector
Fault present
Detection is no longer guaranteed, or
invalid parameter setting
z FDOOT:
– Failure of both optical sensors
z FDO:
– Failure of the optical sensor
z FDT:
– Failure of one or both thermal sensors
z Remedy cause
z Adjust parameter setting
z Replace detector
Supply fault z Check detector line voltage
z Replace detector
Software error (watchdog error) Replace detector
Memory error Replace detector
Any fault message
2
Communication error involving detector and
control panel
Remedy cause
1
The information displayed on the detector exchanger and tester is always in
English; no translation into the corresponding language.
2
This status can be displayed together with another status, e.g. 'needed excha.'
(replacement necessary).
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