• For panel overcurrent, the LED flashes twice continuously.
• For PSU over voltage above 28.5 VDC with a tolerance of +0.5 V, the LED flashes four times
continuously.
Earth fault detection
If an earth fault is detected, the earth fault LED flashes on and off continuously.
Auxiliary power fault detection
If an auxiliary power fault or auxiliary output fault is detected, the aux fault LED flashes on and off
continuously.
Sounder fault detection
The sounder fault LED flashes as follows:
• For sounder short, the LED turns on and off continuously.
• For sounder open, the LED flashes twice continuously.
Both sounder 1 and sounder 2 circuits use the sounder fault LED.
System fault detection
If a system fault is detected, the system fault LED and common fault LED turn steady on.
FireClass Essential Panels User Manual12
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