No and no.
The cooker is built in so this calls for a bit of work to see if I can find a way of getting into the back! I'll let you know how I get on. Thanks.
I am both ashamed and relieved to say that we have resolved the problem which was caused by the timer being on 'auto'! I am sorry to have wasted your time. At least we know where to come in the event of future problems. Please let me know what we owe you? Thanks.