Called out to this for blowing RCD on odd occasions.Mostly when using hob.
Checked all Oven elements/ grill & visual check on hotplates / wiring.
All OK
Didn’t show any insulation fault & all worked fine while i was there (obviously).
Its a touch control hob , with 2 circuit boards.
Thinking i might suggest referring her to AEG, unless anyone has any ideas?