Operation Manual
FT1020G3 Rev 2.4
64
There will also be a "FAULT: No reply ….." message for each unit that
FT1020G3 cannot find and "FAULT: Multiple faults …".
Note: Each 10th minute a new attempt is made to communicate in
one direction only.
When all breaks are repaired (corrected) the communication
automatically returns to communicate in one direction only.
FAULT: Detector removed zone xxx address xx
A wireless smoke detector 4611 has been removed from its base.
FAULT: Earth fault (plus), Control Unit xx
FAULT: Earth fault (minus), Control Unit xx
Earth fault is detected in Control Unit no. xx. System voltage is
normally 24 V
DC
.
+24V to earth is normally 12.5 V. 0V to earth is normally 11.5V.
Voltage to earth < 3.4V = Earth fault (minus).
Voltage to earth > 18.3V = Earth fault (plus).
Check all cables (for damage, etc.). The function of the Control Unit
cannot be guaranteed. Call for service personnel/engineer.
FAULT: Earth fault, technical number xxxxxx
Check all cables (for damage, etc.) connected to the unit.
FAULT: Expansion board x, loop x, Control Unit xx
This is valid for the I/O Matrix board (4582) no. x, connected on COM
loop x (0-3) in the Control Unit no. xx.
There is some internal fault on the board, has to be replaced.
FAULT: External fuses, Control Unit xx
The fault is to be found in the external power supply equipment, which
has a fuse fault output connected to a programmable input in Control
FAULT: External power supply, Control Unit xx
The fault is to be found in the external power supply equipment, which
has a fault output connected to a programmable input in CU xx.
FAULT: External presentation unit xx, Control Unit xx
1728 (Ext. Presentation Unit - EPU.)
The EPU xx, connected to Control Unit no. xx, is programmed as
another type in the SSD or a fault in the unit.
Note: Sometimes the EPU is called Remote Display Unit (RDU) or
FAULT: Extinguishing system, Control Unit xx
The fault is to be found in the extinguishing system (FIRE
PROTECTION ACTIVATED), which has a fault output connected to a
programmable supervised input in the FT1020G3 system, in Control
Unit no. xx. Also check the input connections.
Note: Close to the soft key area in the display there will be an
FAULT: Expansion board x, Control Unit xx
This is valid for the exp. boards 4580, 4581 & 4583, i.e. no. x, mounted
in the Control Unit no. xx.
There is some internal fault on the board, which has to be replaced.
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