LENNOX Error Code E3
Error Code E3 – Indoor Fan Motor Fault
If your Lennox system shows Error Code E3, it typically indicates an indoor fan motor fault or fan speed issue. The unit detects that the fan isn’t operating within the required parameters, which can reduce airflow and trigger shutdowns.
Symptoms may include weak air output, strange noises, or the unit stopping shortly after start-up. Common causes include a failing fan motor, capacitor issues, wiring faults, or dust build-up restricting fan movement.
Because indoor airflow is critical for heat exchange, E3 should be addressed promptly to prevent freezing, overheating, and reduced system lifespan.
✅ Hycool Air Conditioning Sydney can troubleshoot Lennox E3 faults quickly and restore reliable airflow. If E3 is showing, call Hycool for fast Sydney service.