13
ENGLISH
TROUBLESHOOTING
Problem Possible causes Remedy
Pump does not reach working
pressure
Nozzle worn Replace nozzle
Water fi lter fouled Clean fi lter (L) (fi g.5)
Insuffi cient water supply Turn on water supply tap fully
Air being sucked into system Check tightness of hose fi ttings
Air in pump Switch off the appliance and keep
depressing and releasing the gun
trigger until the water comes out in
a steady fl ow. Switch the appliance
back on again.
Adjustable nozzle not positioned
correctly
Set nozzle (E) on (+) setting (fi g.3)
Thermostatic valve tripped Wait for correct water temperature to
be restored
Water being sucked from an open
container from a height of more than
0.5 m.
Reduce the suction height.
Pump pressure drops during
suddenly use
Water being sucked from an external
tank
Connect appliance to the mains
water supply
Inlet water too hot Reduce temperature
Nozzle clogged Clean nozzle (fi g.5)
Inlet fi lter (L) fouled Clean fi lter (L) (fi g.5)
Motor “buzzes” but fails to start Power supply voltage too low Check that the voltage of the mains
power supply line is the same as that
on the plate (fi g.2)
Voltage drop due to use of extension
cable
Check characteristics of extension
cable
Appliance not used for a long period
of time
Contact your nearest Authorised
Service Centre
Problems with TSS device Contact your nearest Authorised
Service Centre
Motor fails to start No electrical power Check that the plug is fi rmly in the
socket and that the mains voltage
supply is present (*)
Problems with TSS device Contact your nearest Authorised
Service Centre
Appliance not used for a long period
of time
Using the tool (M) unjam the motor
through the hole at the rear of
the appliance (in models with this
feature) (fi g. 5)
Water leakages Seals worn Have the seals replaced at your
nearest Authorised Service Centre
Safety valve tripped and discharging Contact an Authorised Service
Centre
Appliance noisy Water too hot Reduce temperature (see technical
data)
Oil leakages Seals worn Contact your nearest Authorised
Service Centre
TSS versions only: appliance starts
even with gun trigger released
High pressure system or pump circuit
not watertight
Contact your nearest Authorised
Service Centre
TSS versions only: no water delivery
when gun trigger is depressed (with
supply hose connected)
Nozzle clogged Clean nozzle (fi g.5)
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