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7. Error Code

When the motor is stopped due to some trouble such as a failure, overload, wire breakage or
misuse, Speed Display displays the error code for checking the status of the unit and
understanding the cause of the trouble easily.
Error code
E0
Self-check error
Overcurrent detection error
E1
(Hard)
E2
Overvoltage detection error
E3
Motor sensor error
E4
Unit overheat error
E5
PAM circuit error
E6
Rotor lock error
Overvoltage detection error
E8
(Soft)
E9
ITRIP error
EF
Foot pedal error
For countermeasures against error displays, see the section on 15.Troubleshooting.
Description
9
Cause
• Abnormal internal memory
• Broken internal memory
• Long-time use at a high load (overcorrect)
• Shorted cord (power line)
• Shorted motor winding
• Shorted cord (power line),damaged circuit
• Broken internal circuit
• Faulty sensor (Hall IC) in the motor
• Disconnected motor cord
• Severed cord (signal line)
• Open chuck
• Faulty handpiece
• Temperature rise in the unit due to longtime
use at a high load
• Unit placed under high temperature
• Abnormal voltage generated in start / stop
circuit
• Faulty start / stop circuit from PAM (L Slide)
• Open chuck
• Faulty handpiece
• Motor Faulty
• Faulty sensor (Hall IC) in the motor
• Severed cord (signal, power line)
• Long-time use at a high load (overcorrect)
• Shorted cord (power line)
• Shortstop of the motor winding
Faulty motor and circuit
• Faulty Foot Pedal or Shorted Foot Pedal cord
• Broken internal circuit

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