Troubleshooting Guide - Hitachi Koki WH 18DBDL2 Manual De Instrucciones

● To avoid injury from an accidental start, turn the switch OFF and remove the plug from the power source
or remove the battery from the main body before making any adjustments.
● All electrical or mechanical repairs should be done only by qualifi ed service technicians. Contact Hitachi
Authorized Service Center.
Problem
Tool doesn't run
Tool suddenly stopped
Tool bits
-can't be attached
-fall off
Switch can't be pulled
An abnormal high-pitched
noise occurs when the
trigger switch is pulled.
Screw head slips or comes
loose.
The charge indicator lamp is
rapidly blinking purple, and
battery charging doesn't
begin.
The charge indicator lamp
blinks red, and battery
charging doesn't begin.
Battery usage time is short
even though the battery is
fully charged.

TROUBLESHOOTING GUIDE

WARNING
Possible Cause
No remaining battery power
The trigger switch was held down while
the battery was inserted.
Tool was overburdened
The battery is overheated.
The trigger switch was held down for 5
minutes or more.
The shape of the attachment portion
doesn't match
Forward/reverse selector button is
positioned halfway
The trigger switch is being pulled only
slightly.
Bit number doesn't match with the screw
size
The bit is worn
The battery is not inserted all the way.
There is foreign matter in the battery
terminal or where the battery is attached.
The battery is not inserted all the way.
The battery is overheated.
The battery's life is depleted.
Possible Solution
Charge the battery.
The safety function was activated.
If the trigger switch is released once and
then pulled again, the tool will run.
Get rid of the problem causing the
overburden.
Let the battery cool down.
This is not a malfunction.
The motor was automatically stopped to
prevent failure of the tool.
Use a bit with a hexagonal shaft that has a
width across fl ats of 6.35 mm.
If you are using an L-type tool bit, replace it
with an S-type bit.
Press the button fi rmly into position for the
desired direction of rotation.
This is not a malfunction.
It does not occur if the trigger switch is
pulled more fully.
Install a suitable bit.
Replace with a new bit.
Insert the battery fi rmly.
Remove the foreign matter.
Insert the battery fi rmly.
If left alone, the battery will automatically
begin charging if its temperature
decreases, but this may reduce battery
life. It is recommended that the battery be
cooled in a well-ventilated location away
from direct sunlight before charging it.
Replace the battery with a new one.
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