Bosch D296 Installation Manual page 26

26 en | Troubleshooting
Red
LED
Off
Off
On
On
On
2017.03 | 7.0 | F.01U.068.899
Yellow Green Terminals 4
LED LED and 5
On Flashing Open
On Flashing Open
Off Flashing Closed
Off Flashing Closed
On On Closed
Installation manual
Terminals 6 Condition
and 7
Open Trouble. If the
reference voltage is
less than ~2 VDC,
dust on the lens
reduced the signal
strength or vibration
misaligned the
receiver.
Open If the reference
voltage is greater
than ~4.2 VDC, the
beam strength
increased because an
initial beam
misaligned or a
partial blockage was
removed at setup.
Closed Alarm
Open Alarm. The access
door is missing or
loose.
Open Alarm and Trouble. An
alarm occurred, then
the beam was
blocked.
Long-range beam smoke detectors
Solution
Clean the
transmitter and
receiver covers.
If the reference
voltage does not
return to
3.8 VDC to
4.2 VDC, realign
the receiver and
press the Setup
switch.
Perform a fine-
tune alignment
of the receiver
and use the
Setup button.
Determine the
cause of the
alarm and reset
the receiver.
Determine the
cause of the
alarm and reset
the receiver.
Replace the
access door.
Determine the
cause of the
alarm and reset
the receiver.
Clear the beam
path.
Bosch Security Systems, Inc.