6
Operation
Table of faults
58
Building Technologies
008250_i_en_--
Fire Safety
2013-08-15
6.13
Table of faults
Below you will find an overview of the errors displayed by the FDUL221 line tester
as well as possible causes and remedies for the errors.
Line device
Line device is shown on the display, the internal and external alarm indicators flash
Position of the line device not detected
Line device is shown on the display with an error
Error display
Possible cause
Remedy
E01 Short
Short-circuit on the detector line. The line separator is open
for the line device shown on the display.
Locate the short-circuit by checking the cable
section behind the line device shown on the
display. In the case of a loop, the location is
also shown as an 'open line'.
E02 Open (+)
Open line on the line The exact position of the open line
cannot be identified by the FDUL221 line tester.
Check the cable. Search for the faulty location
by disconnecting the detector line and re-
checking the cable connection.
Disconnect the return line and restart the
detector line. The open line is located behind
the last line device shown on the display.
E03 Open (-)
Open line on the line
Open the loop at one end and restart the
detector line. The open line is located behind
the last line device shown on the display.
E04 Hi leak
High leakage current
The typical leakage current is approx. 300 µA (base current)
and approx. 3 µA per line device.
Check the cable insulation.
In the case of migrated detector lines:
Check whether old line devices are still
installed on the detector line.
Check whether EOL elements, e.g.
resistors, are still installed on the detector
line.
E05 High cap
a) High line capacity
Line too long. Reduce the length of the loops
or stubs, e.g. through division.
The maximum line length is 3.3 km for
FS20/FS720, 2.5 km for SIGMASYS and also
depends on the line type.
R
lmax
= 240 , C
lmax
= 750 nF
b) Error during migration, e.g. due to forgotten line device
Replace the affected line device.