[Topspinmo]

If electric and runs most likely the pressure valve plugged up or sticking? If it was run dry several times the diaphragm maybe burnt up? It no power and only if you have electric knowledge trouble shooting open unit and trace wires using multimeter.

Never turn on pressure washer without bleeding all air through hose, unit, and spray hose. Do this by connecting water hose turn it on run water through unit, then connect spay nozzle hose run water though that getting all air out, connect nozzle handle open spray trigger releasing remaining air. Now ready to pressure wash. O, this applies to electric or gas pressure washers.