Thermostat shows frequent 'Filter' or 'Service' reminders even after being reset.

Safety warning: No electrical work is required; adjustments are via the thermostat interface.

• 1. Confirm actual filter condition:
  • Inspect and replace the Lennox air filter if dirty.
• 2. Adjust reminder intervals:
  • In the thermostat settings, increase the filter change interval or set it based on runtime instead of calendar days.
• 3. Clear all reminders:
  • Reset filter and service reminders and monitor if they reappear prematurely.
• 4. Update firmware if available:
  • Install updates that may correct reminder behavior.