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7-1
Error Code
If the motor stops due to an abnormality such as a malfunction, overload, overheat, etc. it automatically
checks the state of all components, detects the cause of the abnormality and displays a warning and error
code on the LCD panel of the control unit.
Warning
Description of Warning
Action (Check / Remedy)
HE1
The handpiece has been used after the
checking result through Contra-Check was
either “OIL” or “NG”.<Contra-Restriction> *
Perform maintenance of the handpiece and then
check the handpiece by <Contra-Check>
.
HE0
Overload or a risk of abnormal heating of the
motor detected. <Motor overheat prevention
function> *
Avoid overloading the handpiece with heavy cutting,
etc. and wait for the warning to disappear
.
* If you continue using the product, the motor will stop and error code “E8” will be displayed.
Error Code
Description of error
Action (Check / Remedy)
E0
The motor shaft is locked.
Check if the handpiece is connected properly.
E1
Detected over current in the circuit.
Avoid overloading the handpiece with continuous
heavy cutting, etc.
Press the foot pedal again to remove the error.
E2
Detected a higher motor speed than the rated
value.
E3
The motor drive IC generated an error signal.
E4
Detected high temperature of FET.
Allow the unit to cool down and try again
E5
Detected an overvoltage input to the unit.
Check proper connection of AC adaptor and AC
power cord.
E6
Detected an overvoltage of an LED light.
Check the LED light connection.
E7
Detected a residual overvoltage when the
motor was started.
Wait for approx. 5 sec., then press the foot pedal
again.
If the error does not disappear, check if the motor
and motor cord are connected properly.
E8
A handpiece heat generation error was
detected.
Perform maintenance of the handpiece, and then
check the handpiece by the Contra- Check.
A motor heat generation error was detected.
Leave the motor until it cools down.
E9
The motor does not start up.
Check the motor connection.
EC
Data cannot be saved to EPROM (Memory).
Turn the power OFF and then ON again.
ED
Signals from the sensor cannot be read.
Check the connection of the motor to motor cord.
EE
An increasing handpiece heat generation error
was detected.
Perform maintenance of the handpiece, and then
check the handpiece by the Contra- Check.
EF
Detected an under-voltage input to the unit.
Check proper connection of AC adaptor and AC
power cord.
When an error code is displayed, stop operation of all devices immediately and perform the remedy
indicated in the table above. If the error code appears again, turn the power OFF and then ON again
and check if the error code disappears. If the error persists, the product may be broken. Contact your
Authorized NSK Dealer.
Troubleshooting
7