Helpful hints
Problem
No indications on the LCD
display,
no
sounding.
'P' displayed preceding
time on LCD display
'Main
Receiver,
Tampered'
shown
display
and
sounding
'Aerial
Tampered,
Engineer, Antifalse' shown
on display and buzzer
sounding
'I' displayed preceding
time on display
Persistent R.F.I.
'Case Tampered' shown on
display
Keyswitch
does
operate
'Call In Fail' shown on
display, with transmitter
ID
'Call In Fail' shown on
display, with transmitter
ID
Receiver
does
respond to a transmitter
Receiver
does
respond to a transmitter
Receiver
does
respond to a transmitter
Receiver
does
respond to a transmitter
Possible cause
No power to the system
buzzer
Power below threshold of
10.2Vdc, +/- 0.3Vdc.
Aerial
Aerial has been removed or
on
tampered with
buzzer
Call
Aerial not tted correctly or
tampered with
Local
interference
Local
interference
Case is tampered front or
back.
not
Connector lead not
correctly
Transmitter out of receiver
range
Transmitter
expired
not
Transmitter
programmed to system
not
Transmitter
expired
not
Transmitter
compatible with system
not
Transmitter damaged
radio
frequency
radio
frequency
tted
battery
has
not
battery
has
is
not
Page 28 of 32
Action
Check power supply and fuses.
Re-power unit
Check power supply voltage
Check aerial is correctly tted
or replace aerial
Check aerial is correctly tted
or replace aerial
How to reduce
Refer to the
interference
section
How to reduce
Refer to the
interference
section
Check operation of front and
back tamper switches
Check connector lead is tted
correctly
How to reduce
Refer to the
interference
section
Replace transmitter batteries
Adding a
Refer to the
transmitter
section
Replace transmitter batteries
See appendix 1 for compatible
transmitters
Replace transmitter or return
to EMS for repair
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