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23
1. Check the cables are in good
connection.
2. Turn off the Master Power
Switch to the OFF position,
wait 30 seconds, then turn on
the Master Power Switch to
the ON position. If the screen
still shows Er 1, please notify
your local Customer Service
Center.
Problem
Er 1 (Computer did
not receive any
signal for 30
seconds.)
Er 3 (Over voltage
protection trip.)
Potential Causes
1. Bad communication for
upper and lower
controller.
2. The communicate signal
from upper or lower
controller is bad by
interference from motor.
Corrections
Er 4 (Excessive
current from the
controller.)
1. Input AC power over
voltage.
2. Chip for controller is
damage.
Turn off the Master Power Switch
to the OFF position, wait 30
seconds, then turn on the Master
Power Switch to the ON position.
If the screen still shows Er 3,
please notify your local Customer
Service Center.
1. Belt is too tight.
2. Belt rubs against the
deck.
1. Adjust the belt tension.
2. Apply silicone lubricant or turn
off the Master Power Switch
to the OFF position, wait 30
seconds, then turn on the
Master Power Switch to the
ON position. If the screen still
shows Er 4, please notify your
local Customer Service
Center.
TROUBLESHOOTING&MAINTENANCE
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