Dishwasher tripping RCD?

[rolipoli]

Help anyone? @pigletjohnif you’re out there? DH switched on dishwasher and 30 or so mins in the RCD flipped off. I switched off dishwasher and then turned RCD back on. Then exact same thing happened today. I’ve switched off dishwasher at the wall but who do I call? Electrician? Appliance repair? Dishwasher is SMEG, 7 years old so probably due to become unusable as all our white goods seem to at that age.

Electrician

Our washing machine has been doing this for years and we can only do a cold wash. Being doing this since 2020 so you’ve reminded me it’s about time
😳🤣

heating element or control panel

depending on make/model you can get the heating element exchanged.
if it's the control panel it's often not worth repairing

Ours was water getting into motor. Replaced it

From your description it is probably the heating element. It is not energised until after the machine has filled up with water and pumped round the cold rinse, hence the delay. It is a replaceable part. It may have degraded with age and a crack in the sheath let water in. Oven and grill elements in cookers do the same. RCD trips are more often than not caused by watery appliances. Including kettles and washing machines, but also outdoor lamps and sockets with rain in them.

Appliance repair person can fix it.