Rinnai error codes

Rinnai makes gas tankless water heaters that report faults as two-digit diagnostic codes on the unit or the wired controller. The codes are shared across its range, but troubleshooting steps vary by series, so use the series in your manual. The codes apply to model numbers such as RL75i and RL94i; check the label on your unit to confirm yours.

17 codes across 1 appliance type.