QL-720NW FAQs & Troubleshooting QL-720NW Not your product? Sort by Updated Date Popularity 2 Results 1. 10/22/2020 Wi-Fi® indicator is lit in green but the printer cannot communicate with other devices via Wi-Fi. 2. 10/03/2019 What do the indicator lights mean? Error Messages/LED Indications FAQs & Troubleshooting