THURSDAY, 27 FEBRUARY 2014
PAGE 24 OF 31
EMS75VR-ROYAL-VENDING-INSTALLATION AND USER GUIDE-ISS3
7.3
How to troubleshoot motion sensor alarms
The motion detection LED flashes to indicate that the microRMD has detected movement. However, a motion
sensor LED flashing continuously may indicate that the microRMD is faulty or, if a microRMD is not fitted, that
the parameter settings are incorrect.
Note:
The controller stays in the ready mode if the motion detection LED is flashing continuously.
Follow the chart below to troubleshoot problems with the microRMD.
Is Sn=1?
Set sensor enable
(Sn) to 1
No
Yes
Motion detection LED
flashing continuosuly
Check value of the
sensor enable (Sn)
parameter.
Replace
microRMD
No
Check the
motion
sensor
circuit
Are the
connections well
made?
Check the
connections
at the ems and
sensor head
Yes
