Use manufacturer remote-diagnostic platforms (LG ThinQ, Samsung SmartThings) during a service visit

Steps

1. Confirm the appliance is Wi-Fi connected and registered in the manufacturer's app (LG ThinQ or Samsung SmartThings) before the visit if possible
2. For LG appliances, use the ThinQ app's Smart Diagnosis feature (or the connected diagnostic report) to review error history and sensor data, which on many models can predate the visit by pulling recent stored data
3. For Samsung appliances, check SmartThings for pushed error codes with plain-language descriptions and Samsung's suggested troubleshooting steps, and use the unit's on-board service/test mode to cycle through stored error history on models that support it
4. Cross-reference the app/service-mode error data with the manufacturer's official fault-code documentation before ordering parts, rather than relying on the app's summary alone
5. Take advantage of manufacturer-provided technician training tracks (e.g., GE Appliances' no-cost smart-appliance courses, and similar LG/Samsung service-network training) to stay current on connected-diagnostics workflows