30 en | Troubleshooting
Access Modular
Controller 2
2019-11 | V02 | Bosch Security Systems B.V.
6 Troubleshooting
If problems occur read the table below.
Adjust only those controls specified in the installation manual.
Improper adjustment of other controls may result in damage,
and require extensive work by a qualified technician to restore
the unit to normal operation.
If you are unsure of the problem or if the problem persists,
contact After sales support, page 34.
Problem Cause Solution
Display is not
working.
– Voltage is too
low.
– Power is off.
– Make sure the
power supply
has enough
voltage to
power the
controller.
– Power up the
controller.
Controller is not
online.
– Network
connection is
missing.
– DIL switch 5 is
set to OFF
(BPA protocol
is selected).
– Plug the
Ethernet cable
into the
controller.
– Make sure to
configure the
Ethernet
interface
correctly. Refer
to Configuring
the Ethernet
Interface for
instructions.
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