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8 Trouble Shooting
8-1
Trouble Situations and How to Imple-
ment Countermeasures
This section describes trouble situations of the wireless pushbutton switches system and how to imple-
ment countermeasures.
8-1-1
Troubles at Installation or Operation
Situation
Master Unit's power is not turned
ON.
The Master Unit can not receive
signals from all the Slave buttons.
The Master Unit can not receive a
signal from a specific Slave but-
ton.
Wireless communications are
interrupted.
Radio waves are weak.
(Yellow LED always lit)
8 - 2
Possible cause
The power supply terminal of the
Master Unit is not connected
properly.
24 VDC power is not supplied.
The Master Unit is not correctly
connected to the equipment to be
controlled.
The antenna of Master Unit is
loose.
The ID of the Slave button used
for Master Unit is not registered.
The operating frequency of the
Slave button is different from one
of the Master Unit.
Signal is not being transmitted
from the Slave button.
An object blocking radio waves
was placed on the communica-
tions path.
A device that generates noise is
nearby.
A Master Unit or Slave button is
installed on the floor.
There are radio wave obstacles.
The antenna is not oriented prop-
erly.
Troubleshooting methods
Correctly connect again.
Connect another 24 VDC supplied
device instead of the Master Unit and
check whether 24 VDC is supplied. If 24
VDC is supplied, the repair or replace-
ment of the Master Unit is needed.
Correctly connect again.
Tighten again so that there is no loose-
ness.
Register the ID of the Slave button to be
used in the Master Unit.
Make the same between the Master Unit
and the Slave buttons at the radio fre-
quency displayed on the Master Unit
device.
Confirm that the reception confirmation
LED lights after operating the Slave but-
ton. If it does not light up, replacement is
necessary as the Slave button has
failed.
• Move the blocking object after obtain-
ing permission.
• Move the installation location of Mas-
ter Unit and Slave button.
Keep the Master Unit and Slave button
away from the noise source by about 1
m.
Install the Master Unit and Slave buttons
at a relatively high position (about 1.5 m
high).
Keep the Master Unit and Slave buttons
away from radio wave obstacles about 1
m away
Adjust the orientation of the antenna and
secure it firmly.
Wireless Pushbutton Switch User's Manual (A265)
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