Dyaco FT98A-YT41, Service Manual

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LS1 issue troubleshooting form
LS1 message Possible cause Things to check Solution
The monitor hasn't receive any speed
signal for 8 seconds
check the speed sensor cable is in good
connection
Make sure the good connection for
cables
The speed sensor didn't detect signal
completely.
Check the gap between speed sensor and
magnet.
To keep the gap-distance less than 3
mm.
Defective sensor or bad cable connection.
Check if the sensor and cables are circuit
short damaged.
Change the sensor or cables.
The motor can not
move
The motor can not work.
Check if the motor wire is plug well and the
controller is normal power supply.
Re-plug the cables again or change
another controller.