Thermostat shows 'Schedule Error' or fails to follow programmed schedule

Safety first: No electrical work is required for schedule issues.

Steps to troubleshoot:

• 1. Sync with app: Open the Resideo/Honeywell Home app and ensure the schedule is correctly set. Force a sync by saving the schedule again.
• 2. Clear and recreate schedule: On the thermostat, disable the current schedule and then create a new one from scratch.
• 3. Check time and date: Verify that the thermostat's time, date, and time zone are correct, as incorrect time can cause schedule misfires.
• 4. Update firmware: If available, update the thermostat firmware via the app to correct known schedule bugs.
• 5. Factory reset (last resort): Perform a factory reset and reconfigure the thermostat and schedule if corruption persists.

When to call a professional: If schedule errors continue after reset and firmware update, contact Resideo support for model-specific guidance.