The electrode kit on a Rinnai HD55i water heater generates the spark that ignites the burner and monitors the flame afterwards to confirm safe combustion. It's a small component doing two jobs at once, and the whole ignition sequence depends on it working correctly.
This genuine Rinnai electrode kit is made to the original specification, restoring reliable spark ignition and accurate flame sensing where the original has worn or become fouled with use. Electrodes are a routine wear item, so it's worth checking their condition during servicing and replacing them before they start causing ignition faults rather than after.
⚠ Important: Installation and servicing must be carried out by a qualified technician familiar with Rinnai products. Turn off the gas supply and disconnect power before beginning any servicing.
Key Features & Benefits
Perfect Compatibility: Genuine Rinnai component for a seamless fit with the HD55i.
Complete Set: Contains the components needed to restore reliable ignition.
Quality Assurance: Manufactured under Rinnai's own quality controls for reliability and longevity.
Enhanced Efficiency: Supports correct combustion and appliance performance.
Safety First: Replacing a worn electrode with genuine parts reduces the risk of ignition faults.
Ideal For
Rinnai HD55i water heaters.
Scheduled servicing and preventative maintenance.
Qualified technicians familiar with Rinnai products.
Repairing ignition or flame detection faults.
Common Problems This Part Will Fix
Ignition Failure: Replaces a worn or fouled electrode no longer producing a reliable spark.
Burner Misfires: Resolves inconsistent ignition caused by electrode wear.
Flame Failure Faults: Fixes issues where the electrode is no longer sensing the flame accurately.
Repeated Fault Codes on Startup: Addresses ignition-related faults linked to a deteriorating electrode.
Why Buy This Product?
If your HD55i is misfiring or struggling to light reliably, a worn electrode is one of the first things worth checking — and this genuine kit restores both ignition and flame sensing to Rinnai's original standard. It's a routine, low-cost fix that heads off bigger ignition faults down the line.
Order the Rinnai HD55i Replacement Electrode Kit online today.
