Rinnai N Series Replacement Electrode Assembly (PN-150) The electrode assembly on a Rinnai N Series 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 assembly 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 supp