Specifications

ISW-D8125CW-V2 | Installation and Operation Guide | Troubleshooting
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Bosch Security Systems, Inc. | 8/11 | F01U161691-05 17
4.0 Troubleshooting
4.1 Troubleshooting Solutions
Symptom Diagnosis Remedy
Commercial wireless interface module has
lost communications with the EN4200. This
causes all programmed RF points on that
commercial wireless interface module to go
missing immediately (missing alarms or
missing troubles at control panel.) It will also
cause a Point Bus Fail 1 (or 2) at the control
panel.
Check for LED activity at receiver(s).
Double-check wiring between
commercial wireless interface
module and EN4200.
• +12 V/Vs to GND = approx. 13
VDC
• DATA/OUT to GND =
fluctuating voltage (data flowing)
Make sure that RCV jumper on
commercial wireless interface
module is set to '1' if one EN4200 is
used on a commercial wireless
interface module; If two EN4200's
are used on a commercial wireless
interface module, set the RCV
jumper on the commercial wireless
interface module to '2'.
The commercial wireless interface module
hasn't 'heard' from an RF point for the
length of the programmed supervision
interval. The most common reasons are
damage to the transmitter, physical
environmental changes, or a dead battery.
To find out which RF points are missing,
press [DIAG] for RF diagnostics, then [2]
for Off-normal point’s status. Display will
start at lowest numbered off-normal point
and automatically scroll up. [NEXT] or
[PREV] keys will switch to manual scrolling.
Locate missing transmitter.
Check for physical damage. Check
battery voltage, which should equal
3.0 VDC min. Bring transmitter
closer to receiver and cause a
transmission, to determine if a range
problem exists due to a change in
the environment. For range
problems, a second EN4200 may be
added or add an EN5040-T repeater.
Internal diagnostics checksum failure Clear EEPROM, and reprogram the
commercial wireless interface
module and all of its transmitters. If
EEPROM failure re-occurs, return
the commercial wireless interface
module for repair/replacement.
The tamper switch on the commercial
wireless interface module is open.
Check the commercial wireless
interface module enclosure to ensure
it is properly installed and closed.
Point response is correct at the
commercial wireless interface module,
but incorrect at the control panel (for
example, RF point is in trouble when it
should be faulted, and so on).
Point programming at control panel is
incorrect.
Make sure point programming at
control panel is correct, especially
the Point Response. Remember that
regardless of transmitter type or
configuration of an external circuit,
the commercial wireless interface
module will always report a fault to
the control panel as a short, and a
tamper as an open. In most cases, a
point response type that gives
trouble on open is desired.