hi i have a diplomat hja 8630, i turn it on the water fills up inside but doesnt circulate also there seems to be a funny humming noise from underneath have already changed the drain pump so know this is ok. just want to know if my problem is the circulation pump or somethimg else any ideas help help help please my wife is driving me crazy, jason.

Jason, April 2012

Also could be a faulty capacitor for the motor.

Kenjo, April 2012

circulation pump seized or something jammed in the impeller.remove circ pump to check.Buzzing is probably because it's seized or jammed

CK, April 2012