HVAC Sales Master

Fault Code Lookup

HVAC Sales Master
433 / Inverter Flash 29 — Red LED 2 flashes / Green LED 9 flashes
OD Inverter Compressor Over-Current
This code typically points to
  • Compressor or inverter over-current condition
  • Wiring or connection issue
  • Compressor mechanical or electrical problem
Next checks to confirm
  1. Refer to unit service documentation for detailed troubleshooting
  2. Check electrical connections
  3. Check compressor and inverter condition per outdoor-unit service procedure
Escalation
Outdoor control treats repeated occurrences as service-soon/service-urgent behavior in the communicating alert framework
Reset behavior
To clear alert code, disconnect power to both the indoor and outdoor units, then reconnect power and restart.
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
Lennox Residential Communicating Systems Alert Code Guide 100017c, p.38
Look up another codeChange brand