Flex 8EX / 12EX EU System Instruction Manual
March 2018
Page 64 of 66
7.3 Troubleshooting Tips
Problems
Possible Reasons
Suggestions
No response when
transmitter push-
button 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 pro-
cedure (8EX)
Redo the startup procedure by holding
the power key at the START position
for up to 2 seconds and then release.
Transmitter pushbut-
ton functions locked
(12EX)
Initiate the Start command by rotating
the power key switch to the START
position.
Incorrect system RF
channel
Check and make sure the transmitter
handset and the receiver unit both
have the same channel.
Incorrect system
serial number/ID code
Check and make sure the transmitter
handset and receiver unit both have
the same serial number/ID code.
System out of range
Make sure the startup procedure is ini-
tiated within 100 meters (300 feet)
from the receiver location.
No response when
transmitter push-
button is pressed
(damaged hard-
ware)
Defective transmitting
and receiving module
Check the SQ display on the face of
the receiver unit. If it does not illumi-
nate when the pushbutton is pressed,
then either the transmitting or receiv-
ing module is defective. First, replace
the transmitting module. If the SQ dis-
play is still not lit when the pushbutton
is pressed, then replace the receiving
module.
Defective encoder
board or decoder
module
If still no response, replace the trans-
mitter encoder board. If it is still unre-
sponsive, 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 dia-
gram inside this manual or on the
receiver cover.
