Replacement Auto Heat Control Board Assembly model 472734 for pool and spa heat pumps. Direct fit replacement for part number 622812. Restores control functions for compatible UltraTemp and ThermalFlo units. Key benefits Restores reliable heat pump control: replaces a failed control board to temperature regulation, compressor and fan sequencing, and safety interlocks to normal operation. Direct compatibility: designed to match the original board form factor, connectors, and mounting points for units that use part 622812, reducing installation time and fit issues. Saves service time: swapping the board is faster than diagnosing multiple discrete components, helping you the heat pump to service quickly. Durable electronic assembly: printed circuit board with factorymounted components and connectors made for heat pump applications. What this part does Acts as the main control board that manages heating cycles, sensors, relays, and user commands. Interfaces with thermostat and safety devices to regulate pool and spa temperature. Provides connector layout and mounting points that align with original equipment. Compatibility and specifications Part number: 472734. Replaces: 622812. Compatible with UltraTemp and ThermalFlo pool and spa heat pump models that use part 622812. Verify compatibility by comparing part numbers and connector arrangements before . Construction: printed circuit board with electronic components and molded connectors. Size and exact layout match original replacement requirements for compatible models. Installation and performance notes Intended as a replacement for the original control board; installation requires basic electrical and mechanical knowledge. Power must be disconnected before removal and installation. Compare connectors and mounting holes to confirm match. Professional installation is recommended if you are not experienced with heat pump electronics. Use scenarios a failed control board after the heat pump unexpectedly stops cycling or displays control errors, restoring normal heating operation for pool and spa. Perform componentlevel during seasonal maintenance to address intermittent control issues without replacing the entire heat pump. a control board after electrical surge or moisturerelated failure to bring the unit back to reliable service. What to check before ordering Confirm your heat pump uses part number 622812 or that the original control board matches the connector and mounting layout of this assembly. Ensure power has been isolated and follow safety precautions during installation. This replacement control board provides a straightforward option to restore core control functions in compatible UltraTemp and ThermalFlo pool and spa heat pumps that require part 622812.