The bypass valve is most likley jammed. Remove the cover from the machine, then remove the chemical tank. Unscrew the micro switch cover and manually operate the micro switch. If the motor runs the bypass valve is faulty. Replace the valve along with the stem seals on the valve.
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A few things to check, the GFI plug has tripped, the machine has safety switches under cover, could have gotten wet and froze. Take cover off, plug machine in, with a electrical tester start where power enters machine and test all switches till you find bad one.
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.
Hi: This sounds like a short circuit or motor problem. They are relatively easy to take apart. If you see a burned wire or connector this can be repaired. If not, it is the motor and probably too expensive to repair considering the price of a new one.
hi. you will need to go inside the machine to have a look, but it might just be a micro switch on the bypass valve stuck.
you can not miss it, there is a wire going to it, just unclip and check with a meter when pressing the little switch in and out.
Most pressure washers when their gun is released, the machine stops automaticaly. This is done ny means of a control valve. When the gun is closed...pressure is built and the control valve moves and switches a micro switch off. In your case the micro switch is still closed in off position. Now this happens if a machine is left and stored with pressure in it., This control valve could get jammed and leaving the micro switch in off position. It could also stay in off position by sticking, due to incorrect chemical.
So the control valve or even called spill valve, must be renewed.
Sometimes a little lubrication with the right type of silicon grease will get the control valve working again. This job is sometimes delicate and better done by a qualified technician.