17
NEPTUNE PE
Indication light Cause Remedy
Green LED flashes slowly and red LED flashes rapidly
>
>
Flame sensor sooted
Ignition or fuel system failure
• Clean flame sensor (see chapter
7.2.6).
Contact Nilfisk-Alto Service
Cold water operation possible
8.2 Other faults
Fault Cause Remedy
not ON >
>
Engine not started
Engine RPM too low
•
Start engine.
Contact Nilfi sk-Alto Service.
Neptune 5-51DE: Adjust RPM on
the speed control to max.
> Generator defective Contact Nilfi sk-Alto Service.
Cold water operation possible.
Pressure too low > High pressure nozzle worn
out
• Replace nozzle
>Pressure regulation set to low
water volume
•Turn the twist grip on the spray
lance to a higher water volume.
Burner soots > fuel contamination Contact Nilfi sk-ALTO Service
> Burner sooted or adjustment
incorrect