The SinuPulse is only a 20W device and is sensitive to power surges and circuit issues. We do not recommend use in shaver sockets for this reason. There is an internal shutoff switch that may have become tripped as well from a surge and needs to reset, which can take up to 24 hours.
It is always best to try the unit in an entirely different area of the home on a different circuit (not simply a different outlet), typically the kitchen, to determine if it is a circuit issue and to possibly help force a reset if the internal breaker was tripped.
If you find your SinuPulse stops working, ensure the O ring is lubricated to restore the seal between the water tank and the unit.