ENGLISH • 25
Problem Possible Causes Solution
Pump does not reach working
pressure
Nozzle worn Replace nozzle
Water lter fouled Clean filter (Fig. E15)
Water supply pressure low Turn on water supply tap fully
Air being sucked into system Check tightness of hose fittings
Air in pump
Switch off the appliance and keep depressing
and releasing the gun trigger until the water
comes out in a steady flow. Switch the
appliance back on again.
Adjustable nozzle not positioned correctly Turn the adjustable nozzle (Fig. C12)
Thermostatic valve tripped Wait for correct water temperature to be restored
Pressure drops during use
Water intake from external tank Connect appliance to the mains water supply
Intake water too hot Reduce temperature
Nozzle clogged Clean nozzle (Fig. E7)
Intake filter dirty Clean filter (Fig. E15)
Motor “sounds” but fails to start
Insufficient power supply
Check that the voltage of the mains power
supply line is the same as that on the plate
(Fig. B)
Voltage loss due to use of extension cable Check characteristics of extension cable
Appliance not used for a long period
of time
Contact your nearest Authorized Service
Centre
Problems with TSS device
Contact your nearest Authorized Service
Centre
Motor fails to start
No electrical power
Check that the plug is firmly in the socket and
that the mains voltage supply is present (*)
Problems with TSS device
Contact your nearest Authorized Service
Centre
Appliance not used for a long period of
time
Using the tool unjam the motor from the hole
at the rear of the appliance (In models with this
feature) (Fig. E)
Water leakage
Seals worn
Have the seals replaced at your nearest
Authorized Service Centre
Safety valve tripped and discharging Contact an Authorized service Centre
Appliance noisy Water too hot Reduce temperature (See technical data)
Oil leakage Seals worn
Contact your nearest Authorized Service
Centre
TSS versions only: Motor starts
even with gun trigger is released
High pressure system or pump hydraulic
circuit not watertight
Contact your nearest Authorized Service
Centre
TSS versions only: No water delivery
when gun trigger is depressed
(With supply hose connected)
Nozzle clogged Clean nozzle (Fig. E)
No detergent taken in
Adjustable nozzle on high pressure setting
set nozzle on
“ ” setting (Fig.C)
Detergent too dense Dilute with water
High pressure hose extension being used Fit original hose
Deposits or restriction in detergent circuit
Flush with clean water and eliminate any
restrictions. If the problem persists, contact
an Authorized service Centre
* If the motor starts and does not restart during operation, wait 2-3 minutes before repeating the start-up procedure (overload cutout
has been tripped).
If the problem recurs more than once, contact your nearest Authorized Service Centre.
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