Flex EM/EX HazLoc System Instruction Manual
June 2019
Page 60 of 62
7.3 Troubleshooting Tips
Problems
Possible Reasons
Suggestions
No response when
transmitter pushbut-
ton is pressed
(improper startup and
settings)
Transmitter low
battery power
Check the transmitter battery
level.
Emergency stop
button activated prior
to startup
Prior to turning on the transmitter
power switch, make sure the red
emergency stop button is
elevated.
Improper startup
procedure
Repeat the startup procedure by
holding the power key at the
START position for up to 2
seconds and then release.
Incorrect system RF
channel
Check and make sure the trans-
mitter handset and the receiver
unit both have the same channel.
Incorrect system
serial number/ID code
Check and make sure the trans-
mitter handset and receiver unit
both have the same serial
number/ID code.
System out of range
Make sure the startup procedure
is initiated within 100 meters (300
feet) from the receiver location.
No response when
transmitter pushbut-
ton is pressed
(damaged hardware)
Defective transmitting
and receiving module
Check the SQ display on the face
of the receiver unit. If it does not
illuminate when the pushbutton is
pressed, then either the transmit-
ting or receiving module is defec-
tive. First, replace the transmitting
module. If the SQ display is still
not lit when the pushbutton is
pressed, then replace the receiv-
ing module.
Defective encoder
board or decoder
module
If still no response, replace the
transmitter encoder board. If it is
still unresponsive, then the
decoder module is defective.
No AC power to the
receiver
Incorrect input voltage
Make sure the source voltage is
set correctly.
Blown fuse
Check for any blown fuse.
Incorrect wiring
Check input voltage connection.
Outputs do not
correspond to
transmitter
Incorrect output
connection
Check the system wiring again.
Please refer to the output contact
diagram inside this manual or on
the receiver cover.
