Restart or reset the controller

For a new network or home, use Change Wi-Fi or Manage app pairings. Use USB recovery for an unreachable controller.

On this page

What each action erases

On HomeKit-compatible and Matter-compatible firmware, “other settings” includes the name, modes and temperature ranges, room sensors and paired Serin Link.

Scroll sideways to read all columns.

Action	Wi-Fi network	App pairing	Other settings
Change Network…	Replaced	Kept	Kept
Forget Wi-Fi… or a 10-second button hold	Erased	Kept	Kept
Reset HomeKit Pairing	Kept	Erased	Kept
Reset Matter Pairing	Kept	Erased	Kept
Factory Reset…	Erased	Erased	Erased
USB update of HomeKit-compatible or Matter-compatible firmware	Kept	Kept	Kept
USB install with Erase everything first	Erased	Erased	Erased

ESPHome has no factory reset in its web interface. Reinstalling ESPHome over USB erases saved settings; use USB recovery when you need a clean setup.

Restart without erasing settings

In the web interface, select Firmware > Restart Device. A restart keeps the network, pairings and settings.

Factory reset

HomeKit-compatible and Matter-compatible firmware can reset from the web interface while the controller stays in the indoor unit.

Remove the thermostat from your smart-home app.
Back up settings: Device > Export Settings.
Select Device > Advanced > Factory Reset…. Type ERASE and confirm.

Lower part of the Device section with Save Settings, Export Settings and Import Settings buttons, and the Advanced area open showing Poll Interval, the factory reset warning, and a Factory Reset button — View full-size reset controls.

The board button cannot do a factory reset; its longest hold erases only the saved Wi-Fi network. If the web interface is unreachable, use USB recovery with Erase everything first.

Verify the result

After a factory reset or USB reinstall, follow the quick start from network and app setup. Select any room sensors, pair Serin Link again, and confirm that the indoor unit responds to a command.