Rinnai Error Code E1

If your Rinnai air conditioner shows Error Code E1, it commonly indicates an indoor room temperature sensor fault. When this sensor reads incorrectly, the unit may cycle strangely, fail to cool/heat properly, or shut down unexpectedly.

This can be caused by sensor failure, wiring problems, moisture intrusion, or indoor PCB faults.

✅ Hycool Air Conditioning Sydney can diagnose Rinnai E1 faults quickly and restore reliable temperature control. If E1 appears, call Hycool today.