Newly installed Harbor Breeze ceiling fan with light feature — lights work but fan suddenly stopped working. (Installed 5 days ago and fan worked OK until now.) I read manual and tried all troubleshooting (i.e. pressed REV switch up and down in hopes of jostling it to work properly). Checked dimmer switch in remote's battery compartment. Pressed LEARN switch but fan did not move into MEDIUM speed. Fan not working at all. What do I do next?