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Trouble Shooting and Correction
Symptom
Machine refuses to start
Fluctuating pressure
Motor buzzes
Machine stops
Fuse blows
Machine pulsating
Machine often starts
and stops by itself
Machine starts, but
no water comes out
10
Cause
Machine not plugged in
Defective socket
Fuse has blown
Defective extension cable
Pump sucking air
Valves dirty, worn out
or stuck
Pump seals worn out
Low voltage or
low temperature
Fuse has blown
Incorrect mains voltage
Thermal sensor activated
Nozzle partially blocked
Fuse too small
Air in inlet hose/pump
Inadequate supply of
mains water
Nozzle partially blocked
Water fi lter blocked
Hose kinked
Pump/spray handle is
leaking
Pump/hoses or accessory
frozen
No water supply
Water fi lter blocked
Nozzle blocked
Recommended action
Plug in machine.
Try another socket.
Replace fuse. Switch off other machines.
Try without the ex ten sion cable.
Check that hoses and connections are
air tight.
Clean and replace or refer to local ALTO
distributor.
Clean and replace or refer to local ALTO
distributor.
Activate the trigger of the spray handle.
Replace fuse. Switch off other machines.
Check that the mains voltage corre-
sponds to specifi cation on the model tag.
Leave the washer for 5 minutes to cool
down.
Clean the nozzle.
Change to an installation higher than the
amp. consumption of the ma chine.
You may try without the extension cable.
Allow machine to run with open trigger
until regular working pressure resumes.
Check that the water supply corresponds
to specifi cations required (see model
tag).
NB! Avoid using long, thin hoses (min.
1/2")
Clean the nozzle.
Clean the fi lter.
Straighten out hose.
Contact your nearest ALTO Service
Centre.
Wait for pump/hoses or accessory to
thaw.
Connect inlet water.
Clean the fi lter.
Clean the nozzle.
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