472100 Display Temperature Controller Board Replacement for MiniMax NT

2025 Upgraded 472100 Digital Display Temperature Controller Board Replacement for MiniMax NT Series Pool and Spa Heater, Durable Upgrade with a New keypad for 6800 DDTC Mini MAX NT Included

About this item

Please note that this product is not OEM; it is only a compatible replacement part.

472100 control board compatible for MiniMax NT LN Series Pool and Spa Heaters, firt for HTR 200 NT LN N H A S H I , HTR 250 NT LN N H A S H I , HTR 300 NT LN N H A S H I and HTR 400 NT LN N H A S H I

LED Indicators: Multiple LED indicators provide visual feedback on the system's power, heating, and various modes. Digital Display: The circuit board features a clear digital display for easy monitoring of settings and operations

Intuitive Controls: User-friendly controls allow convenient adjustment of pool, spa, and other operational settings.

Compact Design: The compact circuit board is designed for efficient integration into pool and spa control systems.

Robust Construction: Built with high-quality components, ensuring reliable performance and durability.

【Free White Overlay Panel Included】Comes with a high-quality white overlay panel for a clean, professional finish. The panel enhances the appearance of your heater and protects the display for long-term durability.

Material: Brass

Power: Operates on 24V AC; the control board consumes approximately 5–12VA, compatible with pool heater power circuits.

Purpose: A direct replacement part for the 472100 temperature control mainboard, used for overall control and temperature regulation of pool and spa heaters.

Functions: Collects signals from multiple sensors—including water temperature, equipment high voltage, fan, and pressure—to automatically start and stop the heater, fan, and valve loads. It also performs self-diagnostic checks, reports status errors, and switches between dual water circuit modes for the spa and pool.

Operating Principle: The main control chip reads sensor signals—including temperature, pressure, and thermal fuse readings—in real time, compares them with preset temperature thresholds, and uses relays to control the activation and deactivation of the heating module, fan, and water circuit valves. It also monitors for faults such as short circuits and overheating in real time, triggering protective lockouts and displaying error codes on the control panel.