Hi this is Tech Mike
make sure the door seals are good
please let me know
Hi the seals were replaced about 18 months ago and on just looking are ok
usaully the problem is the thermal probe inside the oven though
when it fails it will either overheat or not hold temp well
its easy to replace with just basically a screwdriver
Ive just moved the thermometer to the front and turned the heat up, Im waiting to see what happens when the oven says its at temp, then comparing with inner thermometer
it may come up to temp but the temp probe in the oven can not recognise quick enough so you will have erratic performance.
99% of the time thats all the problem is;-)
I will switch us to Q & A so your question wont time out until we are through;-)
It . the oven says it was at 200 but internally at the front top was 160?
its not very expensive
I will also help you replace that part if you need me?
Where can I get one and how easy are they to fit? and tips?
the best place to get that is Espares, and its a ten minute repair.
Nice one and thanks
Please call Espares for this: 0844 9777 888