SIMPLICITY INSTALLATION MANUAL.
Software:PANEL:R1107 & LOOP:R1062
Approved Document No: GLT.MAN-107
PAGE 27
Issue : 2.00 Authorised: GH Date: 4/06/2007
15.9 SOUNDER FAULTS
On the Simplicity there are only loop controlled sounders fitted. Fault-finding these is similar faultfinding zone
faults.
Sounder circuit controllers(ZSCC).
Check :-
Check that the correct END of Line resistor os fitted. (47K – Yellow, purple, orange, gold)
Check that the sounder fuses is OK (FS1, – 4000mA TD)
If working on an existing installation, check that the devices are
polarised
. (See Page 5)
Check cable continuity (remove from panel and measure continuity. Should read 47K)
Check its external power supply is connected & working
For loop powered sounders, check that all sounders are communicating, and check their analogue value. If a
sounder is returning a value less than 8, then it has detected an internal fault and should be replaced.
If they are not communicating, then check that they have power, and that the power is connected the correct
way. If they have power, they may be damaged. Try a replacement if available.
15.10 LOOP WIRING FAULTS
A loop fault can be caused by a break, or short circuit in the
Loop wiring. Open the panel and look for the 2 green LEDs on
the termination PCB. Under normal conditions these should be
all lit steady. The LEDs represent Loop1 Side A and Loop 1
side B,
If both loop LEDs are off, then this indicates that there is a short on the loop that the isolators couldn’t bypass.
(Check that the isolators are enabled, and aren’t set for a cable continuity check). Split the loop half way, and
check if either side of the loop will power up. Continue making more splits until the short has been found.
If the LEDs for a loop are flashing (both on, side a only, both on, side b only etc), then this indicates a break in
the wiring. This could be caused by either a break, or a pair of isolators shutting down a short circuit. If there are
several missing devices (wait for the zone fault LED & check the addresses in that zone), then there is probably
a short circuit on the loop (look for isolators lit Yellow or flashing). The missing devices should give an indication
of the section with the break. Investigate that section as per the dead short circuit fault tracking method, as
described above.
If there are no missing devices, then there is probably a simple break. If the loop has been configured such that
as you move down the loop, the address always increases, then the fault can be located through the menu.
Go to view device screen. And select the first device on the loop. The screen will say either Side A only or Side
B only. Scroll through the loop. When it changed from Side A only to Side B only (or Vice versa), this should be
the location of the break.
Alternatively, disconnect one side of the loop and check which devices can be read. The break should be after
the last read device.
*** FAULT ***
1 of 1
Loop 1 Cable Fault
