I have the EasyTouch Indoor Control Panel, 4 Circuits (P/N 520548) installed inside my house and the LCD screen now says NO COMM. I've read other posts where the fix is to go into settings and do an address find on the remote control panel and the main control panel, but there is no address option in the settings of my indoor control panel. I can still control everything from the main panel, but nothing from the indoor panel. Time and date are not showing correctly either on the indoor control. Any ideas?