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My electric k1800fsc power washer the pump will not shut down when you release the trigger, also the wand is leaking at trigger area and were the wand inserts to it have used the unit very little.

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5 Suggested Answers

Anonymous

  • 10 Answers

SOURCE: pressure washer stalls out when wand nozzle is released

common for not starting unless trigger engaged as you are turning the pump as well as engine creating pressure,as for stalling pump has unloader valve which is probably in need of grease(use good silicone grease)this allows water to ciculate when trigger released.

Posted on Apr 20, 2009

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Anonymous

  • 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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Anonymous

  • 8 Answers

SOURCE: let go of wand trigger pressure will not come back

spill valve is stuck and needs to be cleaned and greased common problem....also check all connections for blockage in line

Posted on Jul 25, 2010

Martin Grech

  • 94 Answers

SOURCE: Motor does not shut off when trigger on wand is released

When the trigger is released, pressure builds up and this acts on a valve (spill valve or pressure control valve). When this pressure is big enough it will push the spill valve out and closes a micro switch. Now this Spill Valve gets stuck sometimes, mainly due to soap and chemicals...so the micro switch is not closed...so the machine contiues running. If this is left likee this it will cause damage to the valves. So all one has to do is service the spill valve or as I usually do I replace it. There are cases were the micro switch is damaged also..and needs to be replaced. To see the spill valve and micro switch you must open the cover. The spill valve is located where you see a cover with an electric wire coming out of it. If the micro switch is good...you must tackle the Spill valve.
Regards,
fulltech.

Posted on Jul 28, 2010

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Tyler

  • 277 Answers

SOURCE: Craftsman gas powered pressure washer

The unloader/bypass valve is jamming or defective. When you are not pressing the button the water is directed through the unloader valve/check valve to recirculate.It is common for them to corrode or for the spring to break.If it has an adjustment screw on the unloading valve for unloading pressure make sure you count the turns before disassembling it to make sure you dont over pressurize it.It is not opening causing the engine to choke out.Please let me know if this helps

Posted on Jan 19, 2011

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1 Answer

Re karcher 480 power washer when trigger on the wand is released no water flows from the wand and there are no leaks from around the machine. But the pump runs on , also i can't turn the machine off .


Take the wand hose off the washer itself and you will likely find a filter outfit that gets plugged up. Take it out and clean it real good. Mine was full of stuff out of the hose that gets in when the hose lays on the ground and stuff gets in. Also if hose has been used to drain anything. My filter was plugged and with the pressure it created the washer would not shut off. There could be a filter in the wand area in some models.

Dec 29, 2017 | Karcher Garden

1 Answer

Karcher electric power washer480 .pump runs on when trigger is released there are no leaks . Also i can not turn machine off at the main switch.


If you are unable to shut off the pressure from the wand, there may be an issue with the unloader valve that is stopping it from switching into bypass mode when the trigger wand is released. The unloader valve is designed to respond to the spike in pressure created when the trigger wand is released, and to divert the flow of water coming from the pump to bypass the pressure hose and flow back into the intake end of the pump. If the unloader valve fails to switch into bypass mode, water may continue to flow out of the trigger wand. This may also cause damage to the wand. If you are unable to shut off the pressure from your power washer, stop the engine and discontinue use immediately. The unloader valve should be removed and possibly replaced if found to be malfunctioning. The inability to stop the flow of high-pressure water from the wand can be dangerous and should be fixed before continuing to use the machine.

Dec 28, 2017 | Karcher Garden

2 Answers

Husky 1800 Pressure Washer motor will not turn off when wand trigger is released


I think you have one of two things going on hear, an overpressure problem or a carburetor issue with the engine.

Jul 25, 2017 | Husky Garden

1 Answer

Pressure washer will not shut off when water trigger on wand is released


Sharon, you first should make sure you have no connection/leaks any where. There is a pressure switch inside the pump, which controls when the motor turns on and off. Leaks in pressure causes the pressure switch to activate the motor. Leaks are the biggest contributor to a cycling machine. If no leaks, the pressure switch is defective. 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."
Karcher North America Home Garden Online Help
Frequently Asked Questions about Pressure Washers
Common Pressure Washer Repair Problems Pressure Cleaned

May 18, 2016 | Garden

1 Answer

Pump will not shut off when the sprayer nozzle trigger is releasd on my McCullogh electric press. washer mdl fhh18a


Likely means you now have a leak in the high pressure area. Could it have been frozen over the winter?
Shutoff is pressure activated...

Jun 20, 2015 | McCulloch 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

3 Answers

My electric Karcher pressure washer does not shut off.


this can be that you need to bleed the system of air or that there is a problem with your trigger gun sticking when you release the trigger.
These are two things I would check before you go into the machine.

May 14, 2012 | Karcher Garden

1 Answer

Karcher pressure washer trigger problem


The wands that it will not run with would most likley have a little dirt in the tip of the nozzle. This would not allow the water to flow through in turn activating the pressure switch and shutting the machine down

Troy

Jul 05, 2009 | Karcher K2.26 Electric Power Washer

1 Answer

No high pressure no leaks motor runs off and on when trigger is released


check filter in wand and clean out nozzle hole for starters

May 04, 2009 | Garden

1 Answer

Pressure washer stalls out when wand nozzle is released


common for not starting unless trigger engaged as you are turning the pump as well as engine creating pressure,as for stalling pump has unloader valve which is probably in need of grease(use good silicone grease)this allows water to ciculate when trigger released.

Apr 19, 2009 | Campbell Hausfeld Garden

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