APPLICATION GUIDE
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11. The panel fails to auto-learn past a device
This may be seen with short or open circuit on the loop, the problem will probably be located at the last device
detected or the next one along. See the above on open circuit positive/negative. If there is no associated open circuit
the device may be faulty, link out the device after the last one auto-learned and try again. If this fails link out the last
device detected and auto learn again. If either device is causing the problem replace it. Once the faults have been
removed from the panel and it shows system healthy after a reset go to the system details screen and check the
numbers of devices on each loop is the same as what has been installed on each loop (spur isolators do not show on
system details). If this number is less than expected the following may be the cause:-
If spur isolators are fitted the spurs may not be correctly installed. To check this do test device on what should be the
last device on each spur (see locating a fault below), if the incorrect device LED is on work back along the spur with
test device until a device is correctly identified. The problem may be that device or the next one along the spur, see
open circuit negative/positive above.
If no spur isolators are present or the spurs are all working ensure the site devices have all been connected to the loop.
12. Locating a fault on a loop
If the fault is a short circuit middle or a open circuit on the loop the check auto-config function can be used. This is in
the supervisor level on the others section of the display. When this function is used the panel will go round the loop
from the start until it cannot communicate with a device it will then show an open circuit at an address, this will help
locate a short/open circuit in the middle of a loop. If check auto-config shows a fault at the end of the loop but no
short or open can be found, the problem may be a resetting detector, see 'loop voltage drop' above in “Open circuit”
Positive/Negative section above. Alternatively run the Intermittent fault search in the high level menu.
If an address is suspected as been faulty or dual addressed the test device function can be used to locate the device.
Test device is in the engineer level under testing. When a device is put into test its LED should light up, two will light up
if both devices have the same address. If the tested device is a sounder it will sound continuous. Sometimes the faulty
device will not respond if this is the case test the device before the faulty one and the one after the faulty one to help
locate the exact device.
Other Faults
1. Charger Fault
This will show if the charge current is too low. Possible causes for this are:-
The charger fuse has ruptured.
The batteries are disconnected.
The batteries are damaged.
2. Battery Fault
This will show if the charge voltage is too low. Measure the float voltage at the battery terminals, it should be around
26V depending on how charged the batteries are. This could be low if the batteries are damaged, replacing the
batteries should clear the fault.
3. Mains Fault
If this is the only fault on the panel the LCD back light will be off. Touch the top left of the screen to light the screen.
The panel will only run on batteries for one or three days depending on it's configuration. When the mains returns the
panel will need resetting to clear this fault. If the fault returns after a reset check the mains input.
CF3000 / DF6000 / FX6000 Application Guide
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