
Rinnai Error Code E3
Common error codes

Error Code E3 – Drainage / Water Leak Fault
If your Rinnai unit shows Error Code E3, it may indicate a drainage fault, water leak detection, or drain pump issue (model dependent). The unit may shut down to prevent water damage.
✅ Hycool Air Conditioning Sydney can clear drains, test pumps, and repair Rinnai E3 issues quickly. If E3 appears, call Hycool today.