420020007S Control Board Kit – Compatible Replacement for MasterTemp and StaRite Pool and Spa Heaters The 420020007S control board kit is engineered for reliable performance and fit with a wide range of MasterTemp and StaRite heater systems. It is designed to restore and enhance your heater's functionality, ensuring efficient, safe, and longlasting operation. Key Compatibility Works with all MasterTemp NA and LP series pool and spa heater electrical systems Compatible with MasterTemp models 200, 250, 300, 400, and 400HD control boards Fully compatible with StaRite MaxETherm models SR200NA, SR333NA, SE400NA, SR200HD, SR333HD, and SR400HD control boards Construction Built with FR2 copper foil laminate for durability and dependable conductivity Upgraded solidstate capacitors provide stable performance and longer service life precision soldering ensures secure component connections SR waterproof coating delivers enhanced insulation, moisture resistance, and leak protection Performance Enhancements Integrated optocoupler module and regulated power module for improved signal transfer and power stability Protection features include overheat, overvoltage, and short circuit safeguards Faster output control delivers quicker response times and more efficient heater operation Designed to reduce pump run times and improve heating efficiency, lowering operational costs Use Scenarios 1. Replacing a malfunctioning or failed control board when your heater fails to start, displays no output, or heats water slowly 2. Upgrading an existing board to improve heating performance and operational reliability for pools or spas in residential or commercial settings 3. Resolving intermittent performance issues where inconsistent heating or frequent shutdowns occur Functional Benefits Restores efficient heating operation to your MasterTemp or StaRite heater Enhances reliability and longevity of your heating system Optimizes heater performance for faster water temperature recovery Minimizes downtime and maintenance costs by leveraging durable components and advanced protection features Specifications Model: 420020007S Control Board Kit Material: FR2 copper foil laminate with SR waterproof coating Compatible Heater Types: MasterTemp NA and LP series, StaRite MaxETherm Fitment: MasterTemp 200, 250, 300, 400, 400HD; StaRite SR200NA, SR333NA, SE400NA, SR200HD, SR333HD, SR400HD This quality replacement control board is designed to deliver dependable performance, protect critical heater components, and keep your pool or spa operating at efficiency.