Esser 8000C - Page 181

Fire Alarm Computer 8000C / M
Page 181
Trouble
code no.
Possible cause 1st measure 2nd measure
020
021
Current levels not correct
on analog loop.
Check numbers of
detectors, loop resistor an
d
loop length.
Check detector base
wiring.
022
Detector unable to
correctly activate its base
circuit board
Check detector base
wiring.
None
023
Detector unable to
correctly activate its base
circuit board.
1. Fault occurs while loop
is being switched on:
switch off loop and
switch back on again
after 1-2 minutes.
2. Fault occurs while
switching the base
output:
check for connection of
the freewheeling diode
necessary for an
inductive load. Pay
attention to switching
capacity of output.
3. Check whether the
detector is installed in a
damp environment.
Take any necessary
protective measures, e.g.
use mounting plate 78149
5
or base adapter
781497/98.
024
Detector unable to
correctly activate its base
board.
Check whether detector is
installed in a damp
environment.
Clear detector and re-
check. Take protective
measure if necessary, e.g.
,
using mounting plate
781495 or 781497/98.
025
A manual call point has
detected a short-circuit on
its external D-line.
Check wiring of this D-line
for short circuit.
None
026
An analog D-detector has
recognised a wire break on
its external D-line.
Check wiring of this D-line
for open circuit.
None
027 see 011 --- ---
028
The detector has detected
a short-circuit behind its
cut-off relay.
Two detectors present with
this trouble
⇒
search for
loop short circuits between
the two detectors
One detector present with
this trouble
⇒
loop short
circuit between detector
and panel
033
034
035
see 001 --- ---
036 see 004 --- ---
Meaning of the three-digit trouble cod
e