I think I have an issue with my cooker, the inside oven the flame is orange, I’ve read online and it says not to use it in this case but I don’t know what else I do? I am in a council property and it was installed by my sisters neighbours partner who is a registered gas engineer but I am no longer in contact with him. I can’t really afford to have someone out as I don’t have the money to do that, does anyone know how I can fix it?