I have recently bought an Elkridge Extreme light E22 but it did not come with any manuals. Just inside the door, there is a panel with the water pump switch, slide switch, lights etc. There are two larger switches that look like normal house type switches. One red one and one black one. The red on lights up hen I turn it on and the white one makes the microwave beep when I shut it off. Can anyone tell me what thy are for?