How do you stop a high pitch buzzing noise on a creda cachet double oven?

Food tends to burn when using main fan oven on my Creda Europa Solarplus ?

how can i fit a new hob energy regulator to my creda c366e cooker?

How to raise volume of cooking alarm?

Having problem setting timer on Creda Concept Solar Oven?

Creda concept oven timer cannot be set what part needs replacing?

when turning on my creda oven the fan is making arattling noise?

Creda oven light keeps blowing how do we fix it?

The timer is in auto mode and I cannot get it to manual mode?

creda collection c366e?

Creda C366E Electric Cooker?

how can i get my main oven to work?

Creda C366E cooker grill not working?