Auto Heat Control Board Assembly Part 472734 for Pool and Spa Heat Pumps What this part does Replaces a failed or malfunctioning heat control board to restore automatic heating control functions. Controls temperature regulation, system commands, and communication between sensors and the heat pump unit. Direct replacement for part numbers 473425 and 473693, matching the original board role and connections. Key benefits Restores reliable heating control so the pool or spa returns to normal temperature regulation. Reduces downtime with a directfit replacement that aligns with the original mounting and connector layout. Simple swap out for technicians or experienced DIY installers, avoiding lengthy troubleshooting for other components. Compatibility and identification Part number 472734 Intended as a replacement for parts 473425 and 473693 Compatible with pool and spa heat pump units that use the listed part numbers; verify existing part number before ordering. Performance and quality notes Functionally designed to perform the same control tasks as the original board, including sensor input handling and heat command output. Comes as a complete control board assembly ready for installation. Practical use scenarios Scenario 1: the control board after a power surge causes the heat pump to stop responding to temperature settings. Scenario 2: Swap in this assembly when the heat pump powers on but will not engage the heating cycle or shows control errors tied to board faults. Scenario 3: Include this board during scheduled maintenance when diagnosing intermittent control issues to restore consistent operation. Installation and service Install as a like for like replacement using existing mounting points and connectors. Power down the heat pump and follow standard lockout procedures before replacing the board. If uncertain, consult a qualified service technician to confirm compatibility and complete installation. What to check before ordering Confirm your unit uses part number 472734 or that you are replacing part 473425 or 473693. Verify connector types and mounting arrangement against your existing control board. Specifications Product type: Auto heat control board assembly Part number: 472734 Replaces: 473425, 473693 Application: Pool and spa heat pump control This control board assembly provides a straightforward replacement option to restore heat pump control functions and get your pool or spa back to reliable operation.