Hello Campeón1.
Thank you for your feedback. We are sorry to hear the unit did not power on after the first use.
When a pressure washer works initially but will not start the next day, it is often related to a few setup or safety conditions. Please first confirm the unit is receiving power from a working outlet and that any reset button on the GFCI plug has been pressed.
It is also important to make sure there is a steady water supply connected, at least 45 PSI and fully turned on before starting the unit and fully turned on before starting the unit, as built-in safety features will prevent operation without proper water flow. Additionally, ensure all hose connections are fully tightened and that the trigger is not being pulled during startup, as this can interfere with the starting sequence.
If you are using an extension cord, it should be heavy-duty, outdoor-rated, and properly sized for the unit. If you notice any differences in performance, cease use immediately and discontinue extension cord use until a suitable one is confirmed. If the unit still does not power on after these checks, it may require further inspection. Our success team is available to assist with further troubleshooting or next steps. They can be reached either using the online chat function, on Greenworks Tools page, accessible by clicking “Chat Now” in the bottom corner of your screen or by calling 1-888-909-6757.