version 4.7.2 – July 10th, 2022 Firmware version V2.1.7 and higher
EXXFIRE Installation and Service Manual 98
changes of the air flow. This fault should disappear automatically. If case the fault does not
disappear automatically try the following actions:
a. Reset the fault:
i. Put the key switch in SERVICE position
ii. Press the UP or DOWN button on the UI panel until fault code AA is shown
iii. Then press the RESET button until the fault code AA disappears
iv. Put the key switch back in NORMAL position and remove the key
b. Reset the system (see section 7.2)
If the fault reappears after trying both options, please contact your installer or distributor.
Power Supply System including battery backup
The EXXFIRE® 750CNF/1500CNF/2250CNF system has an internal power supply system including
battery backup. The backup battery will be charged when mains power is connected to the system.
The backup time is more than 12 hours on a full battery.
The system regularly monitors health of the power supply and battery and generates a fault
condition in case anything is wrong. The following fault conditions can occur:
1. Mains power disconnected from the system (fault condition generated after 5 minutes)
2. Battery fault: in case battery not connected, battery voltage drops below 11.5V or when the
internal resistance value of the battery exceeds the upper limit (3 ohm)
3. Battery charger problem
The system will automatically switch off if running on battery power and the battery voltage drops
below 10.9±0,1V.
Monitoring Cool Gas Generator status
During normal operation the system will constantly check if the squib cables are connected properly
to the cool gas generators and if it reads correct squib values, indicating unfired generators.
In case the system does not read the correct values on the squib cables a fault condition is
generated and fault code 55 is shown on the 4-digit display of the UI panel. Corrective action that
should be taken in this case is:
- check if the squib cable are properly connected to the generators and that the orange
mechanical locks of the squib connectors are fully pressed down.
Note: fault 55 will also be activated after reset of the alarm.
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