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If your spa uses a two-filter configuration
ignition failure
This cartridge is listed as compatible with select Aqua Spa models
Brush only
Reusing a partially worn shaft seal after wet-end disassembly is a leading cause of repeat seal failures
Pentair Gas Engine Spark Electrodes | ETi & UltraTemp ETi Heater | 476081Z Clarifiers If your spa uses aThe Pentair Gas Engine Spark Electrodes (476081Z) are the OEM replacement ignition electrodes for the Pentair ETi series and UltraTemp ETi gas assisted pool and spa heaters. When the spark electrode fails, the heater's ignition sequence cannot complete resulting in a no heat condition and preventing the burner from firing. IMPORTANT: LICENSED PROFESSIONAL INSTALLATION REQUIRED Gas and electrical heater components must be serviced by a licensed pool
