HVAC Sales Master

Fault Code Lookup

HVAC Sales Master
39
No Cooling when Requested
This code typically points to
  • System unable to start cooling for more than 45 minutes
Next checks to confirm
  1. Run thermostat diagnostics
  2. Check other active alerts
  3. Determine cause of cooling failure
  4. Recycle power
Escalation
System goes offline for 60 minutes and attempts restart
Reset behavior
Automatically clears when issue no longer exists.
Urgent
Fix now
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
Residential Communicating Systems Alert Code Guide, p.11
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