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My new Karcher K2.900 pressure washer trips electrics when I switch on or sometimes when I press trigger Can you help me please Maurice Peak

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Sounds like power cable broken check all of it you might need to replace it

Posted on Jul 09, 2010

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Posted on Jan 02, 2017

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My Karcher MX720 pressure cleaner keeps tripping the mains power.


Jeff, the specs say it is 230 volt, 16 amp minimum, start up would be more, probably minimum 20 amp.or larger, check your manual. Are you using a small gage/ low capacity extension cord this could blow a breaker or may have an internal short have checked by a Karcher repair center. Check the attached links,instruction and guides, Good luck
"I hope this helped you out, if so let me know by pressing the helpful button. Check out some of my other posts if you need more tips and info."
Any idea why my new 13 amp pressure washer is tripping 15 amp circuit...
http://www.garagejournal.com/forum/showthread.php?t=203916
http://www.electriciansforums.co.uk/electrical-forum-general-electrical-forum/54098-problem-pressure-washer.html

Jun 17, 2016 | Karcher Garden

1 Answer

What is this problem - Karcher 3.86 electric pressure washer: humming noise, plug gets very hot, then unit shuts down?


Your pressure washer is either not fitted with a run/stop device in which case like mine you have to switch off within a few seconds of closing the trigger. Check your model features?
The humming noise is the motor stalled out against the pump because there is nowhere for the water to go. The shutoff is caused by the safety overload switching off after overheat.
Or, it has a pressure operated run/stop which is not working. Because water and electricity don't mix, I would suggest getting more specific help. You can download Karcher manuals /spares lists online from Karcher specialists but remember electricity is the silent killer.

May 20, 2014 | Karcher Garden

1 Answer

Karcher pressure washer hunts ~ off/on ~ when running. How do I fix?


HI Your machine wil start and stop if you have any external leaks when the machine is running at not pressing the trigger. Please start the machine and not pull the trigger and look form leaks. A common one is around the high pressure hose outlet and also the trigger.

Jun 11, 2010 | Karcher 1750 psi Electric Pressure Washer

1 Answer

I have a karcher 495, it is puslating when it is


It sounds like there may be a pressure leak somewhere in the system. The machine cuts off when there is no flow of water past it. If it is leaking then there is intermittent flow. Which would make the machine run then stop continuously.

Nov 15, 2009 | Karcher K 5.85 M Electric Pressure Washer

1 Answer

Karcher K2.94 Overheats


Well, there is a switch inside. It is controlled by the valve that allows the pump to go into bypass when you let go of the trigger. This switch may be worn out or the valve that controls it is sticking. It may also be that your motor is just worn out. There is a heat sensor inside the motor (you cannot get to it) that sometimes wears out and trips too easily.

Jun 12, 2009 | Karcher K2.26 Electric Power Washer

1 Answer

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

Jun 04, 2009 | Karcher PSI Electric Pressure Washer

2 Answers

Karcher K 3.68 M operation


These units have pressure valves that automatically turn off the pump once the pressure is high enough. The pressure switches do fail and sometimes stick and act as you've described.

May 07, 2009 | Alfred Karcher K 5.93 M Electric Pressure...

1 Answer

Motor runs constantly with low pressure.


What you described I would think that it a switch problem, I would go to Karcher.com and order an original part for this and start over with the electrical portion and then go from there.

Jan 18, 2009 | Karcher K2.26 Electric Power Washer

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