Troubleshooting; Indications On Display - Nilfisk-Advance MH 7P Instructions For Use Manual

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 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 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 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 Service
Cold water operation possible
Contact Nilfi sk Service
Cold water operation possible
• Fill to proper level (see chapter 7.2.3)
Contact Nilfi sk Service
Cold water operation possible
Contact Nilfi sk Service
Cold water operation possible
Contact Nilfi sk Service
english
1) to higher water/
15