Fault Code Lookup

HVAC Sales Master
10
Unknown Device Detected
This code typically points to
  • New communicating device added after original setup
  • Offending device soft-disabled by thermostat

Next checks to confirm
  1. Confirm wiring between thermostat, smart hub, and devices
  2. Cycle power
  3. Reconfigure system
  4. S30 path: Menu > Settings > Advanced Settings > View Dealer Control Center > Equipment > Reset / Re-configure System

Escalation
Thermostat may soft-disable the unknown device; furnace/air-handler/outdoor controls may show double horizontal lines; damper/EIM green LED may flash 3 seconds on / 1 second off
Reset behavior
Clear by reconfiguring the system.
Service Soon
Schedule repair
Need deeper detail?
Retrieve the subcode for this platform:
  1. On thermostat: Menu > Settings > Advanced Settings > Dealer Control Center > Notifications
  2. Review active alarms on homeowner notification screen or in Dealer Control Center > Notifications
  3. For service-app access, press the smart hub commissioning button once
  4. Connect the mobile device to the smart hub when the LED begins blinking green
  5. Use the app as a service tool after system commissioning is already complete (S30 service session auto-logs out after 30 minutes)
Tool required: iComfort Mobile Setup application for service workflow
Source
iComfort S30 Installation Manual and Setup Guide, pp.53-54; Residential Communicating Systems Alert Code Guide, p.8