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Symptom
Even when the trigger is
released, the motor does
not stop, or it repeatedly
switches on and off .
The high-pressure hose
won't detach or is diffi cult to
detach from the main unit
or the trigger gun.
Water is leaking from the
washer.
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.
The battery takes a long
time to charge.
The USB power lamp
has switched off and the
USB device has stopped
charging.
USB power lamp does not
switch off even though the
USB device has fi nished
charging.
It is unclear what the
charging status of a USB
device is, or whether its
charging is complete.
Charging of a USB device
pauses midway.
Charging of the USB device
pauses midway when the
battery and the USB device
are being charged at the
same time.
Possible cause
There is water leaking from the high-
pressure hose.
There is water leaking from the main unit or
the trigger gun.
There is a problem with the main unit.
Strong pressure is still being applied to the
high-pressure hose.
The high-pressure hose or trigger gun is not
attached while the tank containing water is
attached.
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.
The temperature of the battery, the charger,
or the surrounding environment is extremely
low.
The charger's vents are blocked, causing its
internal components to overheat.
The cooling fan is not running.
The battery's capacity has become low.
The USB power lamp lights up green to
indicate that USB charging is possible.
The USB power lamp does not switch off
even when charging is complete.
The charger was plugged into an electrical
socket while the USB device was being
charged using the battery as the power
source.
A battery was inserted into the charger while
the USB device was being charged using a
power socket as the power source.
The battery has become fully charged.
○ Check and make sure that the connector
is securely connected.
○ If the high-pressure hose is damaged,
contact a Hitachi Authorized Service
Center for repairs.
Contact a Hitachi Authorized Service Center
for repairs.
Switch off the power and squeeze the
trigger to release the pressure.
This is not a malfunction.
○ Attach the high-pressure hose and
trigger gun.
○ When storing the washer, drain the water
from the tank and washer. See Fig. 17.
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.
Charge the battery indoors or in another
warmer environment.
Avoid blocking the vents.
Contact a Hitachi Authorized Service Center
for repairs.
Replace the battery with one that has
capacity remaining.
Plug the charger's power plug into an
electric socket.
This is not a malfunction.
Examine the USB device that is charging to
confi rm its charging status.
This is not a malfunction.
The charger pauses USB charging for about
5 seconds when it is diff erentiating between
power sources.
This is not a malfunction.
The charger pauses USB charging for
about 5 seconds while it checks whether
the battery has successfully completed
charging.
11
English
Remedy
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