Hitachi Koki USA AW 150 manual Troubleshooting, English

English

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	The power plug is not plugged into the power	Plug the power cord into the power socket.
when the trigger is pulled.	socket.
	The switch is set at “OFF”	Switch the washer on.
	The extension cord is unplugged or severed	Replace the extension cord or check it with a
	midway.	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	The water volume or pressure from the faucet	Open the faucet fully.
operating when the	is too low.	Unravel any twists in the water hose and
trigger is released.		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	The water hose is not connected.	Connect the water hose.
discharged.	The water hose or high-pressure hose is	Unravel the twists.
	twisted.
	The backflow valve on the one-touch joint is	Check to make sure that the inner diameter of
	not operating.	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	The power plug is not plugged into the power	Plug the power cord into the power socket.
rise.	socket.
	The switch is set at “OFF”.	Switch the washer on.
	The water volume or pressure from the faucet	Open the faucet fully.
	is too low.	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.

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