The thermostat frequently loses connection to the app or shows an intermittent offline status.

Safety first: No mains work is required.

• Improve Wi‑Fi coverage: Move the router closer, adjust its orientation, or add a Wi‑Fi extender near the thermostat.
• Router settings: Ensure the router is not set to aggressively power‑save or frequently change channels in a way that disrupts IoT devices.
• Fixed 2.4 GHz: If using a combined 2.4/5 GHz SSID, consider splitting them and connecting the thermostat to a dedicated 2.4 GHz network.
• If only the thermostat drops: The internal Wi‑Fi module may be failing; contact Worcester Bosch for diagnostics and potential replacement.