Skip to main content

Lennox iComfort thermostats work with Lennox HVAC systems for integrated comfort control. This guide covers common issues.

Thermostat Won't Connect to WiFi

Network setup issues:

  • iComfort app: Use Lennox iComfort app for setup
  • Smart Hub: S30 requires Smart Hub for WiFi
  • 2.4GHz network: May only support 2.4GHz WiFi
  • Account: Create Lennox account in app
  • Dealer setup: Initial setup may require dealer

Error Codes on Display

Common error conditions:

  • Communication: Loss of communication with outdoor unit
  • Sensor fault: Temperature sensor issues
  • System fault: HVAC equipment fault codes
  • Alert history: View alert history on thermostat
  • Dealer needed: Many faults require dealer diagnosis

Zoning and Comfort

Multi-zone issues:

  • Zone sensors: Add wireless sensors for better zone control
  • Damper operation: Verify zone dampers are working
  • Perfect Air: Check if Perfect Air mode is overriding settings
  • Schedule: Review programming schedules

Smart Home Integration

Platform connections:

  • Alexa: Lennox skill for voice control
  • Google Home: Link through iComfort
  • Apple HomeKit: Not directly supported
  • Home Assistant: Limited integration options

Ready to get started?

Check out the Lennox iComfort S30 Ultra Smart and see where to buy.

View Product Details