The detergent dispenser is opened with a solenoid device that is triggered by the PCB at about the same time as the heater is switched on during a normal wash cycle.
Most pre rinse programmes are just a short wash in cold water.
Yes its my new Hotpoint and so far im loving it to bits, i just hope out of the thousands manafactured every year that im one of the lucky ones.
So far i have been using seperate Finish Powder Detergent, Rinse Aid and Salt and have been amazed at the results, even my tea mugs no longer have stains in them…
How did i ever mange all these years with out one….