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14 | English
F 016 L70 995 | (17.7.14) Bosch Power Tools
Troubleshooting
Problem Possible Cause Corrective Action
Motor refuses to start Plug not connected Connect plug
Mains socket faulty Use another socket
Fuse faulty/blown Replace fuse
Extension cable damaged Try without extension cable
Motor protector has activated Allow to cool for 15 minutes
Frozen Wait for pump/water supply hose/accessory to thaw
Motor stops Fuse faulty/blown Replace fuse
Wrong mains voltage Check that mains voltage corresponds to specifications on
the model tag
Motor protector has activated Allow to cool for 15 minutes
Fuses blow Fuses incorrectly rated Change to a mains supply higher than the pressure washer
amp consumption
Motor starts but no pressure Nozzle partly blocked Clean nozzle
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
Voltage loss due to use of exten-
sion cable
Check characteristics of extension cable
Appliance not used for a long pe-
riod of time
Contact your Bosch Service Centre
Problems with TSS (Total Stop
System) device
Contact your Bosch Service Centre
Pressure pulsating Air in the inlet water supply
hose/pump
Allow pressure washer to run with open spray handle and
nozzle at low pressure until regular working pressure is ob-
tained
Inadequate water supply Check that the water supply corresponds to specifications.
The minimum specification for the water supply hose is
1/2" or 13 mm diameter
Water filter blocked Clean water filter
Water supply hoses squeezed Straighten out kinked water supply hoses
High pressure hose too long Remove high pressure extension hose. Retry (extension
hose max. 7 m)
Pressure too low, but steady
Note: Several types of accesso-
ry will normally deliver a lower
pressure
Nozzle worn Change the nozzle
Start/stop valve worn Activate trigger five times in quick succession
Motor starts up but with re-
stricted or no working pressure
No water supply Connect water supply
Water filter clogged up Clean the water filter
Nozzle clogged up Clean nozzle
The pressure washer starts ir-
regularly by itself
Pump/power gun leaky Contact your Bosch Service Centre
Water leaks from machine Leaking pump A slight water leak is permissible; in case of excessive leak,
contact Service centre
No detergent taken in Adjustable nozzle on high pres-
sure setting
Attach the High Pressure Foam nozzle or select the foam
setting on the 3 in1 nozzle
Detergent too dense Dilute with water
High pressure hose extension be-
ing used
Fit original hose
Deposits or restriction in deter-
gent circuit
Flush with clean water and eliminate any restrictions. If the
problem persists, contact your Bosch Service Centre.
OBJ_DOKU-35451-007.fm Page 14 Thursday, July 17, 2014 11:40 AM
14


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