Karcher K 3.92 M - Manual (Page 15)

English
15
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CAUTION Disconnect the machine from the power
source before making any repair.
TROUBLESHOOTING
Symptom Cause Solution
Motor will not start On/Off switch is in the “OFF”
(O) position. Turn switch to the “ON” (I)
position
Power cord is not plugged in. Plug in power cord.
Electrical outlet does not sup-
ply adequate power.
Try a different outlet.
Tripped circuit breaker. Switch off pressure washer.
The reset will be automatical-
ly, for that wait that the tem-
perature goes down.
Unit does not reach
high pressure. Diameter of garden hose is
too small. Replace with a 5/8 inch gar-
den hose.
Water supply is restricted. Check garden hose for kinks,
leaks and blockage.
Not enough inlet water supp-
ly. Open water source full force.
Water inlet filter is clogged. Remove filter and rinse out in
warm water.
Spray wand is on low pressu-
re position. Turn spray wand to high
pressure position.
Output pressure va-
ries high and low. Not enough inlet water supp-
ly. Turn water on full force.
Check garden hose for kinks,
leaks or blockage.
Pump is sucking air. Check that hoses and fittings
are air tight. Turn off machine
and purge pump by squee-
zing trigger gun until a steady
flow of water emerges throu-
gh the nozzle.
Water inlet filter is clogged. Remove filter and rinse out in
warm water.
Discharge nozzle is obstruc-
ted. Blow out or remove debris
with a fine needle.
Calcified gun, hose or spray
wand. Run distilled vinegar through
detergent suction tube.