8 Troubleshooting
8.1
Indications on Display
Indication
on Display
FLF
FLF
>
Flow sensor fault
FLO
FLO
>
Water supply turned off or inadequate supply
to machine
>
Detergent tank empty
>
Pressure regulation on the safety control
block or VarioPress-lance
volume
>
Machine scaled
Fuel shortage
Fue
Fue
>
>
Motor overheated
Hop
Hop
HOS
HOS
>
Machine overheated
>
Leakage or inadmissible operating condition
by short-time operation
LEA
LEA
>
Spray gun leaking
>
High pressure hose, coupling or line system
leaking
>
Detergent tank empty
>
Water inlet fi lter dirty
>
High-pressure pump drawing in air
>
Flame sensor sooted
LHE
LHE
>
Ignition or fuel system failure
LHL
LHL
>
Burner failure
POL
POL
>
Pump oil low
SEC
SEC
>
Temperature sensor damaged
SEO
SEO
>
Temperature sensor damaged
UPC
UPC
>
Microprocessor failure
1)
Options / model variants
Original instruction
Cause
1)
set to low water
Remedy
Contact Nilfi sk-Alto Service
Cold water operation possible
•
Required volume fl ow and pressure see
chapter 9.3 Technical Data
•
Fill detergent tank or set detergent me-
tering to „OFF"
•
Turn the twist grip on safety control block
or VarioPress-lance
pressure volume (see chapter 4.4)
Contact Nilfi sk-Alto Service
•
Fill fuel tank
Cold water operation possible
•
Turn main switch in position „OFF", let
machine cool down
•
Remove extension cord, if being used.
•
Possible phase failure; have electrical
connections checked
Contact Nilfi sk-Alto Service
•
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.
•
Repair Spray gun
•
Replace high-pressure hose, retighten
screw fi ttings
•
Fill detergent tank or set detergent me-
tering to „OFF"
•
Clean fi lter (see chapter 7.2.1)
•
Repair leaks
•
Clean flame sensor (see chapter
7.2.6).
Contact Nilfi sk-Alto Service
Cold water operation possible
Contact Nilfi sk-Alto Service
Cold water operation possible
•
Fill to proper level (see chapter 7.2.3)
Contact Nilfi sk-Alto Service
Cold water operation possible
Contact Nilfi sk-Alto Service
Cold water operation possible
Contact Nilfi sk-Alto Service
NEPTUNE 5 / 7 / 8
english
1)
to higher water/
17