Troubleshooting - Bosch AQT 42-13 Original Instructions Manual

OBJ_BUCH-2164-001.book Page 18 Friday, April 11, 2014 12:41 PM
18 | English

Troubleshooting

Problem
Motor refuses to start
Motor stops
Fuses blow
Motor starts but no pressure
Motor "sounds" but fails to start
Pressure pulsating
Pressure too low, but steady
Note: Several types of accessory
will normally deliver a lower pres-
sure
Motor starts up but with restricted
or no working pressure
The pressure washer starts irregu-
larly by itself
Water leaks from machine
F 016 L81 056 | (11.4.14)
Possible Cause
Plug not connected
Mains socket faulty
Fuse faulty/blown
Extension cable damaged
Motor protector has activated
Frozen
Fuse faulty/blown
Wrong mains voltage
Motor protector has activated
Fuses incorrectly rated
Nozzle partly blocked
Insufficient power supply
Voltage loss due to use of extension
cable
Appliance not used for a long period
of time
Problems with TSS (Total Stop Sys-
tem) device
Air in the inlet water supply
hose/pump
Inadequate water supply
Water filter blocked
Water supply hoses squeezed
High pressure hose too long
Nozzle worn
Start/stop valve worn
No water supply
Water filter clogged up
Nozzle clogged up
Pump/power gun leaky
Leaking pump
Corrective Action
Connect plug
Use another socket
Replace fuse
Try without extension cable
Allow to cool for 15 minutes
Wait for pump/water supply hose/accessory to
thaw
Replace fuse
Check that mains voltage corresponds to specifica-
tions on the model tag
Allow to cool for 15 minutes
Change to a mains supply higher than the pressure
washer amp consumption
Clean nozzle
Check that the voltage of the mains power supply
line is the same as that on the plate.
Check characteristics of extension cable
Contact your Bosch Service Centre
Contact your Bosch Service Centre
Allow pressure washer to run with open spray han-
dle and nozzle at low pressure until regular working
pressure is obtained
Check that the water supply corresponds to specifi-
cations. The minimum specification for the water
supply hose is 1/2" or 13 mm diameter
Clean water filter
Straighten out kinked water supply hoses
Remove high pressure extension hose. Retry (ex-
tension hose max. 7 m)
Change the nozzle
Activate trigger five times in quick succession
Connect water supply
Clean the water filter
Clean nozzle
Contact your Bosch Service Centre
A slight water leak is permissible; in case of exces-
sive leak, contact Service centre.
Bosch Power Tools