While you wait for answers, we may have found some information which could help you.
Click here for Oven Take So Longwhy doesnt the oven work on my baumatic cooker when the fan is switched on?
baumatic gas hob model BH67SS no ignition, fuse ok?
My oven wont stay lit if i release the oven knob?
my baumatic oven won't stay alight when the oven knob is released?
Replacing the thermocouple ?
How can I fix the oven button?