QL-810W/810Wc FAQs & Troubleshooting QL-810W/810Wc Not your product? Sort by Updated Date Popularity 2 Results 1. 06/01/2021 What do the indicator lights mean? 2. 22/10/2020 Wi-Fi® LED is lit in blue (QL-810W) or WLAN icon appears on the LCD (QL-820NWB) but the printer cannot communicate with other devices via Wi-Fi. Error Messages/LED Indications FAQs & Troubleshooting