Cause Solution On/Off switch is in the OFF position. Turn switch to the ON position. Power cord is not plugged in. Plug in power cord. Extension cord is too long. Extension cord is not proper gauge. Extension cord is damaged. Use unit without an extension cord, or replace extension cord with a 25 (7.6 m) or shorter, 14/3 gauge or thicker, outdoor-rated extension cord. Electrical outlet does not supply adequate power. Try a different outlet. Tripped pressure washer GFCI circuit breaker. Reset the GFCI and retry the unit.