7. TroubleshooTinG
Problem
Possible causes
Remedy
Pump does not reach working pressure
nozzle worn
Replace nozzle
Water filter fouled
C
lean filter (L) (fig.9)
I
nsufficient water supply
Turn on water supply tap fully
Air being sucked into system
C
heck tightness of hose fittings
Air in pump
S
witch 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.
A
djustable nozzle not positioned correctly
S
et nozzle (E) on (+) setting (fig.5.C)
Thermostatic valve tripped
W
ait for correct water temperature to be
restored
W
ater being sucked from an open container
from a height of more than 0.5m.
Reduce the suction height.
Pump pressure drops during suddenly use
W
ater being sucked from an external tank
Connect appliance to the mains water supply
Inlet water too hot
Reduce temperature
nozzle clogged
C
lean nozzle (fig.8)
I
nlet filter (L) fouled
C
lean filter (L) (fig.9)
M
otor “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.
V
oltage 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
C
heck that the plug is firmly 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).
W
ater 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
W
ater 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
C
lean nozzle (fig.8)
no detergent sucked in
A
djustable nozzle on high pressure setting
Set nozzle (e) on
“ “ setting (fig.5.C)
detergent too dense
dilute with water
High pressure hose extension being used
F
it original hose
deposits or restriction in detergent circuit
F
lush with clean water and eliminate any
restrictions. If the problem persists, contact
an Authorised Service Centre
W
ater escapes from thermostat-valve
W
ater temperature inside pump head
has exceeded max. rated value stated on
nameplate
W
ith appliance in operation,
Do noT
stop
the water jet for more than 5 minutes at a
time
(*) If the motor stops and does not restart during operation, wait 2-3 minutes before repeating the start-up procedure (overload cut out has been
tripped). If the problem recurs more than once, contact your nearest Authorised Service Centre.
