Troubleshooting - Kärcher K 3.540 Operation Manual

CAUTION
Symptom
Motor will not start On/Off switch is in the "OFF"
Unit does not
reach high pres-
sure.
Output pressure
varies high and
low.

TROUBLESHOOTING

Cause
(0) position.
Power cord is not plugged in. Plug in power cord.
Electrical outlet does not sup-
ply adequate power.
Tripped GFCI plug.
Tripped circuit breaker.
Diameter of garden hose is
too small.
Water supply is restricted.
Not enough inlet water sup-
ply.
Water inlet filter is clogged.
Spray wand is on low pres-
sure position.
Not enough inlet water sup-
ply.
Pump is sucking air.
Water inlet filter is clogged.
Discharge nozzle is obstruct-
ed.
Calcified gun, hose or spray
wand.
Disconnect the machine from the pow-
er source before making any repair.
Solution
Turn switch to the "ON" (I) po-
sition
Try a different outlet.
Press "RESET" button on
GFCI plug.
Switch off pressure washer.
The reset comes automatically
once the temperature of the
unit drops.
Replace with a 5/8 inch or larg-
er garden hose.
Check garden hose for kinks,
leaks and blockage.
Open water source full force.
Remove filter and rinse out in
warm water.
Turn spray wand to high pres-
sure position.
Turn water on full force. Check
garden hose for kinks, leaks or
blockage.
Check that hoses and fittings
are air tight. Turn off machine
and purge pump by squeezing
trigger gun until a steady flow
of water emerges through the
nozzle.
Remove filter and rinse out in
warm water.
Blow out or remove debris with
a fine needle.
Run distilled vinegar through
detergent suction tube.
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English