Thermostat loses time or date settings after power outages

Note: Many Honeywell Home smart thermostats sync time from the internet when connected.

• Ensure Wi‑Fi and cloud connection: Connect the thermostat to Wi‑Fi so it can automatically sync time from Honeywell servers.
• Replace backup batteries: If your model uses batteries, install fresh alkaline batteries to maintain settings during outages.
• Update firmware: Use the Honeywell Home app to check for firmware updates that may correct clock issues.
• Replace thermostat if persistent: If the clock resets even with good batteries and Wi‑Fi, the internal backup circuit may be failing and the thermostat should be replaced.