Thermostat frequently disconnects from Wi-Fi but continues to control heating locally.

Safety first: No electrical hazards.

• Improve signal: Move the router closer or install a Wi-Fi extender near the thermostat.
• Change Wi-Fi channel: Log into your router and select a less congested 2.4 GHz channel (1, 6, or 11 are common choices).
• Disable router power-saving: Turn off any settings that disconnect devices after inactivity.
• Assign static IP: In your router, reserve a static IP address for the thermostat to reduce reconnection issues.
• If dropouts persist: The thermostat Wi-Fi module may be marginal; consider replacement if cloud control is important.