
Rinnai Error Code P2
Common error codes

Error Code P2 – Low Pressure Protection
If your Rinnai system shows P2, it usually indicates low pressure protection, often linked to low refrigerant or leaks. This can cause weak cooling/heating and freezing.
✅ Hycool Air Conditioning Sydney can diagnose Rinnai P2 faults, perform leak checks, and restore performance. If P2 appears, call Hycool today.