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Model 1503 Owner's Manual
nected and that the battery fuse
(in line with the red wire con-
nected to the battery in the
Model 1503 Control/Communicator)
is good. The BATTERY LOW indica-
tion will remain until the next
battery test is run, 1 hour
later, or when a SHOW TEST com-
mand is given.
- COMMUNICATOR TRBL NOW: Indi-
cated if the digital communica-
tor (not the voice dialer) was
unable to make contact with the
Central Station after trying
both numbers multiple times.
This indication will remain un-
til the digital communicator
tries again (as a result of a
reportable alarm or event occur-
ring) or until both phone num-
bers are removed from the digi-
tal communicator. If this hap-
pens, there could be a problem
with the system, central sta-
tion, phone line or the wrong
phone numbers have been entered
in the digital communicator.
Call your dealer for service.
- DEVICE FUSE TRBL NOW or HAD
TRBL: Indicated if there is a
problem with one (or more) of
three solid state fuses on the
Model 1503 Processor Module.
These fuses can be restored
without having to replace anything.
They can be seen by opening the
Model 1503 Control/Communicator
enclosure door and looking in the
opening of the aluminum cover on
the door. At the bottom you will
see three small round components
labeled PTC1, PTC2 and PTC3.
The three fuses are for (from
left to right) the CONSOLES, the
DEVICES and the HORNS. The CONSOLES
are powered through the fuse la-
beled CONSOLES. If the CONSOLES
fuse is “blown”, then the consoles
will not be working. The DEVICES
fuse powers the following devices
that may be connected to the system
(some are options:)
- motion detectors
- smoke/fire detectors
- AUXiliary OUTputs (energy saver
relays)
- COMMUNICATOR outputs
- OK TO ARM output
- ARMED output
The HORNS fuse powers the Inte-
rior siren and the Outdoor Siren.
If it is hot, there is a fault in
the wiring to one of these devices.
To reset these fuses, the fault
must be cleared. Then, unplug the
Model 1503 power transformer (or
remove the tube type fuse on the
Termination Board.) Disconnect,
then immediately reconnect the
battery (within 10 seconds to re-
tain your home control programs.)
Wait a minute or two for the PTC
fuse to cool. Then plug in the
transformer. If you do not feel
competent performing such tasks,
call your dealer for service.
NOTE: If the battery is discon-
nected or the battery fuse is blown
you will get a DEVICE FUSE TROUBLE
indication AND a BATTERY LOW indi-
cation when the battery test oc-
curs.
- PHONE LINE DEAD TRBL NOW or HAD
TRBL will be indicated if the
phone line is dead for more than
1 minute. If this happens, check