FireClass ESSENTIAL 2 - Page 11

Note: Missing detector fault is skipped in the fire alarm.
The 601F Flame Detector, 516.600.006, is incompatible with these panels due to detector
head removal monitoring and if used in the zone circuit, it will adversely affect this feature.
5. Invalid end-of-line resistor (EOLR): The respective zone fault LED flashes four times
continuously.
6. Zone-in-test: The respective zone fault LED flashes continuously, in sync with the test LED.
Battery fault detection
The battery fault LED flashes as follows:
• When the battery voltage is less than 22.7 VDC, a low battery fault occurs, and the LED flashes
twice continuously.
• When the battery voltage is less than 19.7 VDC, a depleted battery fault occurs, and the LED
flashes on and off continuously.
If the panel has a battery depleted fault and there is no mains supply, then the sounder, remote
output, zone power, and fire relay turn off immediately, irrespective of faults or alarm events.
If the battery voltage is less than 19.0 VDC, the panel enters sleep mode, and all audio and
visual indications turn off except for the following LEDs:
- Power supply fault LED
- Battery fault LED
- Common fault LED
The panel restarts all functions if the mains power supply is resumed with a system fault.
If this condition persists, the batteries are unable to function as intended in the event of a
blackout.
Note: New batteries are required.
• If the battery is not connected, the LED flashes on and off continuously.
• If the battery has a high internal resistance fault, the LED flashes three times continuously.
• If the battery is overcharged and the voltage is more than 28.5 VDC with a tolerance of +0.5 V,
a battery overcharge fault occurs, and the LED flashes four times continuously. The charging is
cut off from the battery.
Common fault detection
The common fault indicator flashes continuously when any of the following faults occur on the
panel:
• Zone fault
• Sounder fault
• Power supply fault
• Battery fault
• Aux fault
• Earth fault
The common fault indicator is steady on for a system fault or when the Buzzer Silence button is
pressed.
Power supply fault detection
The power supply fault LED flashes as follows:
• For a mains disconnection, the LED flashes on and off continuously.
11FireClass Essential Panels User Manual