Thermostat loses time, schedules, or settings after power outage

Safety first: No wiring work is required for this issue.

Steps to troubleshoot:

• 1. Save settings carefully:
  • After changing schedules or parameters, exit menus properly to ensure they are stored.
• 2. Firmware update:
  • Update the thermostat firmware via your gateway if an update is available.
• 3. Use gateway-based scheduling:
  • For smart models, move scheduling logic to your home automation controller, letting it send setpoints to the thermostat.
• 4. Replace thermostat if memory is defective:
  • If settings are consistently lost, the internal backup or memory is failing; replace the thermostat.