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17
Bosch Power Tools
F 016 L81 709 | (16.3.17)
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/acces-
sory 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 pow-
er supply line is the same as that on the
plate
Voltage loss due to use of extension cable Check characteristics of extension cable
Appliance not used for a long period 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 obtained
Inadequate water supply
Check that the water supply corresponds
to specifications. The minimum specifica-
tion 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 accessory will nor-
mally deliver a lower pressure
Nozzle worn
Change the nozzle
Start/stop valve worn
Activate trigger five times in quick suc-
cession
Motor starts up but with restricted 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 irregularly by
itself
Pump/spray 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 Bosch Service
Centre
No detergent taken in
Detergent too dense
Dilute with water
Residue or restriction in cleaning-agent
nozzle
Flush with clean water and eliminate any
restrictions. If the problem persists, con-
tact your Bosch Service Centre.
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