21C o m m o n Q u e s t i o n s a n d A n s w e r sQ.Can I open the door when the oven isoperating?A. The door can be opened anytime duringthe cooking operation. The oven willautomatically stop cooking and the timesetting will maintain until the door isclosed and the START Pad is touched.Q.What causes the oven interior light anddisplay to dim when using a VariablePower Level?A. This is normal and indicates the oven isoperating and cycling properly.Q.Why does steam and/or vapor escapearound the door and moisture dropletsform on the inside of the oven door?A. This in normal occurrence - as food cooks,steam is given off.Q. What do the various beeps mean?A. Short beep = any pad is touched.Three short beeps = incorrect entry.One long beep = oven plugged in.Three long beeps = end of cooking(microwave will turn off).Series of three short beeps = check food tosee if turning or rearranging is needed.Q.Can the oven be used with the glass trayor roller guide removed?A. No. Both the glass tray and roller guidemust always be used in the oven whencooking.Q & A Steam or vapor escaping from around the door. Light reflection around the door or outer case. Dimming oven light and change in blower sound may occur while operating at power levels otherthan high. Dull thumping sound while oven is operating.All these things are normal with your microwave oven.There is a recirculating charcoal filter kit included for models that are not vented to the outside. Seeinstallation guide for details.Charcoal Filter Kit