Troubleshooting – Karcher K 5.93 User Manual
Page 14
 
14
English
ƽ
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) posi-
tion
Power cord is not plugged in.
Plug in power cord.
Extension cord is too long.
Replace extension cord with 
either a 25 ft. 12/3 gauge cord 
or a 50 ft. 10/3 gauge cord.
Extension cord is not proper 
gauge.
Extension cord is damaged.
Electrical outlet does not supply 
adequate power.
Try a different outlet.
Unit does not reach 
high pressure.
Diameter of garden hose is too 
small.
Replace with a 1/2 inch or 5/8 
inch garden hose. 
Water supply is restricted.
Check garden hose for kinks, 
leaks and blockage.
Not enough inlet water supply.
Open water source full force.
Water inlet filter is clogged.
Remove filter and rinse out in 
warm water.
Spray wand is in low pressure 
position.
Turn spray wand to high pres-
sure position.
Output pressure va-
ries high and low.
Not enough inlet water supply.
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 squeezing 
trigger gun until a steady flow of 
water emerges through the 
nozzle.
Water inlet filter is clogged.
Remove filter and rinse out in 
warm water.
Discharge nozzle is obstructed. Blow out or remove debris with
a fine needle.
Calcified gun, hose or spray 
wand.
Run distilled vinegar through 
detergent suction tube.