
Rinnai Error Code E2
Common error codes

Error Code E2 – Indoor Coil Sensor / Freeze Protection
Rinnai Error Code E2 often relates to the indoor coil sensor or freeze detection. Dirty filters, poor airflow, and low refrigerant can trigger this fault.
Symptoms may include weak airflow, icing, water leaks, or shutdowns.
✅ Hycool Air Conditioning Sydney can diagnose and repair Rinnai E2 faults and restore airflow and performance. If E2 appears, contact Hycool now.