Oven fault tripping rcbo

[Suza72]

Hi All,
Seeking some thoughts on my own Omega free standing 900mm oven.
Over the past year the oven has been tripping the supplying RCBO unit.
I have replaces the rear fan forced element and thermostat but the unit continues to trip rcbo.
Does anyone have any other ideas on shot might cause the tripping?

 

[pc1966]

How long had it been working before the tripping started?
Does it always trip at roughly the same time (switching on, switching off, or when hot, etc)?
Does it ever happen with oven off (e.g. middle of night)?
Is there anything else connect to the RCBO circuit (extractor fan, etc)?

 

[Suza72]

How long had it been working before the tripping started? A couple of years ago.
Does it always trip at roughly the same time (switching on, switching off, or when hot, etc)? Only trips once oven reaches over 200 c.
Does it ever happen with oven off (e.g. middle of night)? No
Is there anything else connect to the RCBO circuit (extractor fan, etc)? No the oven is on a dedicated RCBO only