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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
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