76-QD0460EN-01Y00-00
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14.
Troubleshooting
Before asking repair, carry out the following checks. If the trouble cannot be solved by the following actions,
or if any trouble other than below occurs, stop using the product immediately. After detaching the battery
pack from the product, be sure to ask us or our authorized (designated) servicing factory via the distributor
or sales agent you have purchased from.
Trouble
Probable cause
Action
The tool does not operate.
The motor is overheated.
Wait until the motor gets cool and the LED goes
off.
The battery pack is over-discharged.
The battery voltage falls below a certain level and
protective function is active.
Charge the battery pack.
※
Be sure to charge the over-discharged battery
pack to full level. If the charging level is not
sufficient, the protective function may not be
released.
Low voltage error is outputted.
Replace the battery pack.
Low voltage error may be outputted,
when the
battery pack with degraded performance owing to
the deterioration, low temperature etc., is used.
Normally, the over-discharge protection inside the
battery pack is, in the first place, functioned and
the low voltage error will not be outputted.
The tool is in a setting mode.
In case that the tool is in the setting mode
with the setting device (PC-1 etc.) connected,
detach the battery pack and disconnect the
setting device.
Following error is outputted:
・
Commutation Error
・
Motor lock Error
・
Wire breakage error of motor
temperature sensor
・
Wire breakage error of driver
temperature sensor
・
Over-voltage Error
・
Over-current Error
・
Abnormal pulse signal
・
Memory Error
Ask for the repair to us or our authorized
(designated) service shop.
※
In
the usage at an extremely low temperature,
wire breakage error of motor/driver temperature
sensor and motor lock error may be outputted
owing to the cause of low temperature. Confirm at
the proper ambient temperature.
When releasing the throttle
lever during no-load rotation,
there is a stop sound from the
motor.
It is the operating sound of the brake
when stopping.
It is not a trouble. Continue to use as it is.
Overheat alarm f
requently
occurs.
The load on the tool is big.
Use the tool having proper tightening capability
suitable for the object to be tightened.
The cooling fan is broken down.
Ask for the repair to us or our authorized
(designated) service shop.
The total number of tightened
pieces is a little, while the
battery pack is fully charged.
It is the end of life of the battery pack.
Replace the battery pack.
No lighting of Indicator lamp
for the status of charging (red)
of the battery charger
Dust adheres to the terminals of the
battery charger and the battery pack.
Clean the terminals after unplugging the power
source cord.
