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22
TROUBLESHOOTING
Use the inspections in the table below if the tool does not operate normally. If this does not remedy the problem, consult your
dealer or the Hitachi Authorized Service Center.
Symptom Possible cause Remedy
The motor won’t operate
when the trigger is pulled.
The power plug is not plugged into the power
socket.
Plug the power cord into the power socket.
The switch is set at “OFF” Switch the washer on.
The extension cord is unplugged or severed
midway.
Replace the extension cord or check it with a
di erent electrical appliance.
The thermal protector has been activated. Remedy the problem in accordance with the
details listed in “Safety Mechanisms” on
page 21.
The motor continues
operating when the
trigger is released.
The water volume or pressure from the faucet
is too low.
Open the faucet fully.
Unravel any twists in the water hose and
high-pressure hose.
Check to make sure that the inner diameter
of the water hose is correct.
Check to make sure that the water hose is
not wound onto the reel.
Water is leaking. Check the hose connections.
Water is not being
discharged.
The water hose is not connected. Connect the water hose.
The water hose or high-pressure hose is
twisted.
Unravel the twists.
The backfl ow valve on the one-touch joint is
not operating.
Check to make sure that the inner diameter of
the water hose is correct.
The trigger stopper is locked. Remedy the problem in accordance with the
details listed in “Trigger Stopper” on page 20.
The faucet it turned o . Open the faucet fully.
The nozzle is blocked. Clean the end of the nozzle with the nozzle
cleaner pin supplied.
The strainer is blocked. Wash the strainer, which is incorporated into
the water feed inlet, in accordance with the
details listed in “Inspecting the Strainer” on
page 21.
The water pressure won’t
rise.
The power plug is not plugged into the power
socket.
Plug the power cord into the power socket.
The switch is set at “OFF”. Switch the washer on.
The water volume or pressure from the faucet
is too low.
Open the faucet fully.
Unravel any twists in the water hose and
high-pressure hose.
Check to make sure that the inner diameter
of the water hose is correct.
Check to make sure that the water hose is
not wound onto the reel.
The nozzle is blocked. Clean the end of the nozzle with the nozzle
cleaner pin supplied.
The electrical voltage is too low. Check to make sure that the thickness and
length of the extension cord is appropriate.
Water is leaking. Check the hose connections.