Replacement Auto Heat Control Board Assembly, part number 472734. Compatible with Pentair pool and spa heat pumps. Replaces part numbers 473425, 473693, and 622812. What this part does Replaces the original auto heat control board to restore automatic temperature regulation and heating functions in compatible pool and spa heat pumps. Manages control signals between sensors, relays, compressor and fan circuits to the unit to normal operation. Key benefits Restores system function: Quickly returns heat pump to normal heating cycles when the original control board has failed. Direct fit replacement: Designed to match the original board dimensions and connector layout for a straightforward swap without modification. Reliable components: Built as a complete assembly to minimize diagnosis time and reduce the risk of recurring failures. Saves downtime: Replacing the control board is a practical alternative to full unit replacement, reducing time and cost. Important attributes Function: Auto heat control board assembly for pool and spa heat pump heating control. Compatibility: Intended for heat pump models that use part numbers 473425, 473693, or 622812. Verify part numbers on your existing board before ordering. Form factor: PCB assembly sized to match original equipment for plugandplay installation. Materials and construction: Printed circuit board with standard industrial components and factoryassembled connectors to align with the original control interface. Performance: Restores control logic and electrical connections to manufacturerequivalent operation when installed correctly. Installation notes with power disconnected and follow recommended safety procedures. Basic electrical and HVAC knowledge recommended for installation or have a qualified technician install the board. Confirm compatibility by comparing existing part number and connector arrangement before installation. Typical applications and use scenarios : a failed control board to restore heating capability after error codes, loss of heat, or intermittent operation. Maintenance spare: Keep a replacement board on hand for seasonal maintenance or rapid field repairs to minimize pool or spa downtime. Equipment refurbishment: Use during refurbishment of older heat pumps to control functions to original specifications without replacing the entire unit. Compatibility reminder Check the part number on your existing board. This assembly is intended to part numbers 473425, 473693, and 622812 in compatible pool and spa heat pumps. This control board assembly provides a practical, directreplacement solution to restore automatic heating control in compatible heat pump units.