Hi David, there is more than likely water in the lower base.Take off the plinth,turn off the power and pull off the black plastic inspection cover at the front.Look for water.If it is still wet, drain and dry.when this has dried out fully, the pcb will reset and operate as normal.This may take some time, a day or a week.If it keeps filling with water in the base, you will have to call an engineer as it is possibly a sump leak.All the best.
FOXY, October 2008