Edwards Signaling 5541M-Y6 - Manual (Page 25)

P/N 3100471 ISSUE 3 PAGE 25
Display Illuminated LED's Description
Trouble Indication occurs when the microphone is
missing or wiring is faulty.
Trouble When Standby Power Mode is enabled
and AC power is lost, this indicates that
the panel is running on battery backup
Trouble Panel has lost communication with serial
device indicated.
Trouble Satellite panel assigned to this device
address is reporting a trouble condition
on one or more functions. To see the
trouble indications, you must use the
TRBL VIEW on the satellite panel.