24CS-175-275-575 Series • LCD User Guide
Service messages display (continued)
A short circuit of a control’s power
supply has occurred.
Control
Over-current
Open circuit has occurred
on the bell or siren circuit.
Control
Siren trouble
(Optional) The Box Tamper circuit
has activated.
Control
Box tamper
The phone line connected to the
control is not operating properly.
Control
Phone trouble
The control tried to send a message
to the Central Station, but failed.
Control
Fail to comm.
A short to ground has been
detected on a control circuit.
Control
Ground fault
Your system has lost total power
and needs the clock reset.
Control
Loss of time
The mains power to your system
is not on.
Control
Power trouble
The standby battery is low.
Control
Low Battery
A short circuit of an expansion
devices’ power supply has
occurred.
Expansion
over-current
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