Question about Karcher K2.26 Electric Power Washer

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Switching on and off before turning on lance

I have a karcher 380.when turning on operating switch.the washer turns on and off continuously before pressing wand trigger.

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6 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

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  • 104 Answers

SOURCE: Karcher K 3.68M Electric Pressure Washer. Wand trigger Locks Up.

Sounds like the pressure valve is broken thats why you cant depress the trigger , the valve is on the pump , i would suggest taking it to a repair shop as they are fiddly things to fix

Posted on Jun 05, 2009

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brado83
  • 106 Answers

SOURCE: The engine on my Karcher K2.26 turns on when you

yea mate ya bypass will be stuck(the little valve that turns the unit on or off) also if not that there is a little micro switch attached to the valve this may of dislodged for some reason... commonly happens if unit has sat for a period of time not used

regards
brad

Posted on Sep 16, 2009

brado83
  • 106 Answers

SOURCE: my karcher pressure washer is switching on and off

unfortunately these little units have this problem commonly, 9 times out of 10 it will be the plastic head on the unit will be cracked and leaking slightly... it builds up pressure then leaks out and tries to build up the pressure again and this just reoccurs over and over...

you can get this repaired but is normally about half the cost of a new unit, if the pressure is still okay i would probably recommend just keep using it until it proper dies...

If you do get this fixed, we have studied into this and believe the main cause of heads cracking is warm water say if your inlet hose is in the sun for a period of time this can cause the water to become quite hot or if the unit sits and water trapped inside the head assy freezes can also cause this.

Posted on Sep 17, 2009

seanpwright
  • 2030 Answers

SOURCE: My Karcher 1750 psi electric pressure washer is

thats normal, it is reducing the built up pressure that is not needed until the trigger is pulled.

Posted on Apr 01, 2010

  • 92 Answers

SOURCE: Turn water on then actuate wand trigger. Pressure

You gave a very close solution yourself for the problem. But other leakages can cause such symtoms.Forexample a leaking head or a leaking chemical inlet. These can be caused because the spill valve (pressure control valve) is stuck. When this valve stucks it will leave a micro switch ON. So the machine keeps working with the gun closed. This will in turn creat internal pressure and damages the head, valves and chemical non-return and even damage outlet hose. So besides fixing the leakages you must check and service the spill valve. I often replace the spill valve. One must also checks if the micro switch is faulty. Now very important that what you mentioned that the machine cycles at one minute intervals, with trigger closed...this is most probably always the spill valve fault. If you open machine you see a place where there is a wire..this belongs to the micro switch...under you find the spill valve. Intake and suction valves may now also have a fault. Also there are systems with non-return valves at the machine outlet. You have to tackle by elimination. Fix the leakage..then tackle spill valve and micro switch.
Fulltech.

Posted on Aug 04, 2010

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I just came across your problem. I have just joined FIXYA, and solved various Karcher problems. First of all with all respect, the shop from where you bought the machine, must have told you all necessary instructions to operate your machine.
Now the soap always works on low pressure. So if you have a variable lance, turn it to low pressure. You can also remove the lance, and the soap will surely starts to work. With turbo lances, the soap system does not work. This concludes that the soap does not work when high pressure is used. Bigger machines do spray soap at high and low pressures. But these have regulating knobs, to swith off and on, the soap supply.
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