19
1)
Options / model variants
NEPTUNE 5 SB FA
Indication
on Display
Cause
Remedy
FLF
FLF
>
Flow sensor fault
Contact Nilfi sk-ALTO Service
Cold water operation possible
FLO
FLO
>
Water supply turned off or inadequate supply
to machine
•
Required volume fl ow and pressure see
chapter 9.4 Technical Data
>
Detergent tank empty
•
Fill detergent tank or set detergent me-
tering to „OFF“
>
Pressure regulation on the safety control
block set to low water volume
•
Turn the twist grip on safety control block
to higher water pressure/volume
>
Machine scaled
Contact Nilfi sk-ALTO Service
Fue
Fue
>
Fuel shortage
•
Fill fuel tank
Cold water operation possible
Hop
Hop
>
Motor overheated
•
Turn main switch in position „OFF“, let
machine cool down
•
Remove extension cord, if being used.
•
Possible phase failure; have electrical
connections checked
HOS
HOS
>
Machine overheated
Contact Nilfi sk-ALTO Service
LEA
LEA
>
Leakage or inadmissible operating condition
by short-time operation
•
After three times of short-time ope ration
the machine switches off. To reset: Turn
main switch to position “OFF“, then start
again. Keep trigger squeezed for longer
than 3 seconds. If a leak occurs in the
hose and gun and causes the machine
to start and stop briefl y 3 times, then the
machine will switch off.
>
Spray gun leaking
•
Repair Spray gun
>
High pressure hose, coupling or line system
leaking
•
Replace high-pressure hose, retighten
screw fi ttings
>
Detergent tank empty
•
Fill detergent tank or set detergent me-
tering to „OFF“
>
Water inlet fi lter dirty
•
Clean fi lter (see chapter 7.2.1)
>
High-pressure pump drawing in air
•
Repair leaks
LHE
LHE
>
Flame sensor sooted
•
Clean flame sensor (see chapter
7.2.6).
>
Ignition or fuel system failure
Contact Nilfi sk-ALTO Service
Cold water operation possible
LHL
LHL
>
Burner failure
Contact Nilfi sk-ALTO Service
Cold water operation possible
POL
POL
>
Pump oil low
•
Fill to proper level (see chapter 7.2.3)
SEC
SEC
>
Temperature sensor damaged
Contact Nilfi sk-ALTO Service
Cold water operation possible
SEO
SEO
>
Temperature sensor damaged
Contact Nilfi sk-ALTO Service
Cold water operation possible
UPC
UPC
>
Microprocessor failure
Contact Nilfi sk-ALTO Service
8 Troubleshooting
8.1
Indications on Display