had similar problem,eventually took out pcb,sent to qer for repair and havent heard anything for over 4 months 8) (maybe shouldnt have said that :rolls: )
its the fact it can go for a month and then fails thats causing problems you cannot convince a customer a part is faulty if it does not fail all the time and despite turning on and off repeatedly pump never fails while i am there
could be one of those faults that needs to get worse before diagnosis
i will have to wait and see