60 Diagnostics and fault solutions
Installation and programming manual
17.4.2 Testing the Loop response LED
The green loop LED [A] should flicker each time an interrogated device responds.
If the green LED goes On solid, it means that there is a conductive path between the two poles of the loop
that allows current to circulate and thus blind the device response.
Check that there is nothing other than the devices connected to the loop.
17.5 Repeater faults
If the number of repeaters recognized by the control panel is less than expected (refer also to Chapter 13 -
Configuring the devices connected to the RS485 BUS):
1. Check that the address of each repeater has been set properly (by means of the DIP switches.
2. Check that the cabling is intact.
3. Check the connection polarity.
4. Check that the EOL jumper is in the EOL position only on the last repeater connected the BUS.
5. Using a tester, measure the voltage across the +24 V and GND terminals of the RS485 BUS.
If the voltage is less than 20 V, it means that the resettable protection fuse is open and the current
draw of the devices connected to the BUS is excessive.
Disconnect the BUS devices and reconnect them one by one until you find the problem.
17.6 Battery Fault
17.6.1 Battery Disconnected
The battery is not connected or has failed the batter efficiency test.
1. Allow the batteries to charge for several hours.
2. If the fault signal persists, disconnect the batteries from the panel and test them separately.
3. If only one of the batteries has a voltage below 12.5 - 13 V:
• Replace the faulty battery only.
• Allow the batteries to charge for several hours.
• Check that the fault has cleared.
4. If both batteries have a voltage of 12.5 - 13 V, it means they are both inefficient (even though the
voltage without load is correct).
• Replace both batteries.
• Allow them to charge for several hours.
• Check that the fault has cleared.
• Disconnect the batteries, then check that the voltage on the control-panel battery connector is 27.6 V, or
follow the procedure described in paragraph 6.12.1 - Connecting a thermal probe.
17.6.2 Low Battery
The batteries are running low.
This signal should be present only during primary power source failure (Main 230 Vac). Mains power must
be restored in order to charge the batteries.
17.7 Other faults
The panel shows the message: Meaning
Dialer Fault
Trouble on the dialer communication line (dialer output).
24V output
Short-circuit on the AUX terminals protected by the resettable fuse.
Mains fail
Primary power failure (230 Vac).
Ground fault
Voltage dispersion detected
Lost
A loop device (included in the configuration) cannot be found.
Duplicated Add.
There are two loop devices with the same address.
Maintenance
The pre-set date for Maintenance has expired.
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