customer reported a hpt ffa60 all working fine then every now and again big blue flash from the back and a loud bang!! it carries on working ok,no sign of any leaks or overflows from the drain pan all checks out ok and customer says it does it now and again!! help anyone came across this 😳
Check mains filter/suppressor.I had one of these popping on a d/w now and again.On removal and examination it had a small hole in it. Also it didnt trip out it just popped and kept on going.