Honeywell SYA14 Series Manual page 65

The receiver yellow signal Sensing field may
strength indicator and the be obstructed
red « OFF » operation Emitter and/or
indicator are both receiver units need
illuminated to be cleaned
Emitter and/or
receiver units need
to be aligned
Emission power is
too low
Receiver unit
internal error
Random alarms without Line voltage
apparent cause (i.e., transients greater
erratic outputs, flickering than IEC 801-4
LEDs) Norm standard
Unacceptable
ambient light
interference
Figure 5-2 Emitter and Receiver LEDs
Emitter LEDs
scanning range
indicators
(yellow)
alarm indicator
(red)
test indicator
(red)
107031-23 EN FR26 GLO 1199 Printed in France
Remove obstacles interrupting
sensing field.
Clean emitter lens, receiver lens
and mirrors (see Emitter and
Receiver Cleaning).
Align emitter, receiver and mirrors
Adjust the emission power of the
emitter (see Installation chapter,
Mutual Interference or Cross-talk)
Replace receiver unit by a new one
of the same resolution and
protection height
Ensure the correct supply voltage is
provided (see Electrical
Connections chapter).
Ensure varistors on the inductive
loads are present (see Electrical
Connections chapter).
Ensure external circuit connection
to pins 4 and 5 on the emitter
connector are secure (see Electrical
Connections chapter).
Ensure ground connection on
emitter and receiver are secure (see
Electrical Connections chapter).
Receiver LEDs
operation indicators
(red and green)
signal strength
indicator (yellow)
cross-talk indicator
(red)
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