Nilfisk-ALTO Troubleshooting Your Nilfisk Pressure Washer: Common Issues and Resolutions

NEPTUNE PE

8 Troubleshooting

8.1Indications on Display

Indication light				Cause		Remedy
Green LED		ON	>	Appliance ready for operation.
				When switching on, all the LEDs
				light up once.
Yellow LED		ON	>	Fuel shortage	•	Top up with fuel
						Cold water operation possible
Red LED		flashing	> Service interval: Service due in			Contact Nilfisk-Alto Service
				20 hours
Red LED		ON	>	Service interval expired		Contact Nilfisk-Alto Service
Red LED		ON	>	Pump oil low	•	Top up with pump oil
			>	Engine oil low	•	Top up with engine oil
Green LED		flashing	>	Flow sensor failure		Contact Nilfisk-Alto Service
						Cold water operation possible
			>	Water tap closed or water	•	Required volume flow and pres-
				shortage		sure see chapter 9.4 Technical
						Specifications
			>	Machine scaled		Contact Nilfisk-Alto Service
Green LED		and red LED	>	Leakage or inadmissible opera-	•	After three times of short-time
				ting condition by short-time		operation the heating switches
flash simultaneously
				operation		off. Reset: Turn main switch to
						position “OFF“, then start again.
						Keep spray gun pressed for lon-
						ger than 3 seconds. If a leak oc-
						curs causing the machine to start
						and stop briefly 3 times, then the
						heating will switch off.
			>	Spray handle leaking	•	Check spray handle
			>	High pressure hose, coupling or	•	Replace high-pressure hose,
				line system leaking		retighten screw fittings
			>	Water inlet filter dirty	•	Clean filter (see chapter 7.2.1)
			>	High-pressure pump drawing in	•	Repair leaks
				air		Cold water operation possible
Red LED		ON	>	Charging rate too low	•	Engine has not started
					•	Generator defective
						Contact Nilfisk-Alto Service
Red LED		ON	>	Pump overheated	•	Let pump cool down, avoid long
						by-pass time
			>	Engine cooling water overheated	•	Check water level in radiator
				(Mitsubishi)
Green LED		and red	>	Overheating failure		Contact Nilfisk-Alto Service.
LED	flash alternately					Operation with cold water pos-
						sible.

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