Hi Willf,this is a whirlpool derivative.The start button will flash as it bleeps.Count the flashes between pauses.It will probably flash 4 times between pauses and this is the pressure switch,quite cheap.If it flashes twice look in the base,if there is water then the pump is leaking,not good.3 times,heater defective.4 times drain pump.Please resend if you need further help.All the best.
Foxy
July 2008