Jacuzzi® Circuit Board 6600-505 – J-300 Series, 2-Pump, 60Hz (Encrypted)

6600-505 – OEM Jacuzzi® circuit board for J-300 Series spas, 2-Pump, 60Hz configuration. Encrypted microchip. Replaces previous part number 6600-420.

Compatibility:

• Jacuzzi® / Sundance® J-300 Series, 2-Pump, 60Hz models (approx. 06/2018–2024)

Please Note: This is an encrypted board and will not work with older, pre-encrypted control panels. Installation requires matching wiring configuration and dipswitch/jumper settings to your original board — this is not a plug-and-play replacement. Due to the sensitive nature of electronic components, circuit boards are non-returnable regardless of condition once installed or removed from original packaging.