Thermostat frequently disconnects from Wi‑Fi or Lennox app loses connection intermittently.

Safety warning: No HVAC electrical work is required for network troubleshooting.

• 1. Improve Wi‑Fi coverage:
  • Move the router closer to the thermostat or add a Wi‑Fi extender.
• 2. Change Wi‑Fi channel:
  • Log into the router and select a less congested channel (especially on 2.4 GHz).
• 3. Update router and thermostat firmware:
  • Install latest firmware on both devices if available.
• 4. If dropouts continue:
  • The thermostat's Wi‑Fi module may be failing; consider replacing the Lennox thermostat.