American Standard Timekeeping / NTP Sync Failure

Thermostat loses date/time after power outages and does not resync automatically

Possible Causes

Wi‑Fi not connected after outage, NTP server blocked by router, Internal clock battery failure (if present), Firmware bug

Safety: No high-voltage work is needed.

Restore Wi‑Fi: After a power outage, confirm the thermostat reconnects to Wi‑Fi. Re-enter credentials if needed.
Manual time set: Set the correct time and date manually in the thermostat settings.
Router settings: Ensure your router allows NTP (Network Time Protocol) traffic; avoid blocking standard time servers.

Note: If the thermostat repeatedly loses time even with stable power and Wi‑Fi, replacement may be necessary.

Very Easy 1/5

American Standard smart thermostat internal clock

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