MASTER SPAS PACK, MS90U 825 3RD SENSOR - x300739

Q: What is the MASTER SPAS ML900 Topside Control Panel (X310801)?
A: It is an OEM replacement spa control panel used to operate jets, temperature, lights, and settings on compatible Master Spas systems.

Q: What does it replace?
A: It replaces the older MAS560 control panel (X310840), which is no longer available.

Q: Is this an original OEM part?
A: Yes. It is a genuine Master Spas / Balboa ML900 topside control panel.

Q: What spas is it compatible with?
A: It is designed for select Master Spas models using compatible Balboa EL/GL control systems—always verify fit before ordering.

Q: What functions does it control?
A: It manages key spa functions including pumps, jets, blower, lighting, temperature, and mode settings.

Q: Does it include the overlay?
A: Depending on supplier, it may come complete or require a matching overlay—check listing details before purchase.

Q: Why was MAS560 discontinued?
A: It has been superseded by the ML900 upgrade, which offers updated compatibility and availability.

Q: Is installation easy?
A: Yes for a qualified technician or experienced DIY installer—typically a direct swap with matching connector and mounting layout.