18
8.0 Trouble shooting chart
EN
You have chosen a quality product and therefore deserve the best serv ice. To avoid unnecessary dis ap -
point ments, you should check the following before contacting the nearest Nilfi sk-ALTO service or gan i-
sa tion:
Fault Cause Cor
rec tion
Machine will not start
Insuffi cient petrol supply
Refi ll petrol tank
Battery run down
Recharge the battery *)
Pump frozen up
Let the pump thaw
A fuse has blown
Replace fuse or press the RESET button
(23)
Working pressure too high
Nozzle partly clogged up
Clean the nozzle (see section 7.6)
Working pressure too low
Valve for regulation of water
Completely open the valve for regulation of
volume not adjusted to max
water volume. Turn in the direction of the
water
volume
arrow.
Nozzle damaged
Replace nozzle.
Motor speed too low
Contact Nilfi sk-ALTO servicing department
Working pressure
Air in the pump
Repeat venting. Check that the dosing valve
fl uctuating
(22) is completely closed.
Insuffi cient water supply from
Detach the water inlet hose and check the
the water works
water volume (see section 1.2).
NB! Avoid long thin hoses (min 3/4").
In suction mode
Excessive head or
See section 5.0 Pre-priming
excessively hot water
Water inlet screen clogged up
Clean the fi lter (see section 7.3).
No working pressure
Nozzle clogged up
Clean the nozzle (see section 7.6).
No inlet water
Check the water connection.
Hoses / spray lance frozen up
Let hoses / spray lance thaw.
Burner does not ignite
Lack of fuel
Refi ll with fuel.
Fuel fi lter clogged up
Replace fuel fi lter.
No fl ame
Replace fuel fi lter (see section 7.4).
Poor heating
Scale deposits in coil
Descale coil (see section 7.5).
Should other malfunctions occur than those mentioned above, please contact the nearest Nilfi sk-ALTO
service organisation.
NB: To avoid damage to the electronic systems, the battery connecting cables must be removed when
recharging the battery.