Product: Upgrade 420020007s Control Circuit Board with Switch Pad 472610Z number 461105 Compatibility: Compatible with Mastertemp StaRite MaxETherm NA and LP Series pool and spa heaters What this part does Replaces the heater control circuit board and switch pad assembly to restore user controls and system communication. Handles the functions normally managed by the original board, including input from the switch pad and relay or sensor interfaces required for heater operation. Key benefits Direct replacement for part number 461105, matching the original board footprint and switch pad layout for straightforward installation. Restores responsive button control and reliable electronic switching, resolving issues such as unresponsive controls, intermittent operation, or error codes tied to the control board. Built as a complete board plus switch pad assembly so you do not need to source separate components. Main features Part number 420020007s control circuit board paired with switch pad 472610Z. Designed for compatibility with Mastertemp StaRite MaxETherm NA and LP Series pool and spa heaters. Plugandplay form factor intended to the original assembly without major modifications. Who needs this part Owners or technicians servicing Mastertemp StaRite MaxETherm NA or LP Series heaters that show control panel failures, unresponsive buttons, or control board errors. Facilities maintaining multiple pool or spa heaters who require a reliable replacement part to equipment to normal operation quickly. Practical use scenarios a failed control board after an electrical surge that left the heater unresponsive to user input. Swap the worn or damaged switch pad and board assembly when buttons no longer register or the display behaves intermittently. Install the assembly during routine refurbishment of an older MaxETherm NA or LP Series heater to restore original control functionality. Notes for installers Confirm compatibility with your heater model and the number 461105 before installation. Install using standard electrical safety practices and follow the heater manufacturer guidelines for board replacement. This product provides a direct, compatible control board and switch pad replacement to restore normal control functions on supported pool and spa heaters.