Thermostat loses Wi‑Fi settings and must be re‑joined to the network after every power outage.

Safety: No high‑voltage work required.

• Step 1 – Firmware update: Update the thermostat firmware to the latest version via app or service tool to address known bugs.
• Step 2 – Factory reset: Perform a full factory reset, then reconfigure Wi‑Fi and other settings. Test behavior after a controlled power cycle.
• Step 3 – Stable power: Ensure the HVAC circuit is not subject to frequent brief outages or brownouts. Consider a whole‑home surge protector or UPS for sensitive electronics.
• Step 4 – Replace thermostat: If settings continue to be lost, the internal flash memory is likely failing; replace the thermostat.