{"product_id":"r-b-13-63039021-circuit-board-w-mr-50l","title":"R-B 13-63039021 Circuit Board W\/ MR-50L","description":"\u003cp\u003e\u003cstrong\u003eR-B 13-63039021 Circuit Board with MR-50L\u003c\/strong\u003e is a replacement control module designed for compatible Rinnai tankless water heater systems. This board manages ignition, flame detection, and temperature regulation to ensure consistent hot water delivery.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eKey Specifications:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eOEM Part Number: 13-63039021\u003c\/li\u003e\n\u003cli\u003eIncludes MR-50L remote controller compatibility\u003c\/li\u003e\n\u003cli\u003eManages water flow and burner operation\u003c\/li\u003e\n\u003cli\u003eDirect replacement for factory boards\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eInstall this circuit board to restore full functionality and diagnostics to your Rinnai unit without needing additional components or reprogramming.\u003c\/p\u003e","brand":"eBay Import","offers":[{"title":"Default Title","offer_id":45926322438246,"sku":null,"price":286.73,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0703\/4630\/9734\/files\/s-l100_d0656a8a-c24a-4bf6-8367-41780986386c.jpg?v=1783737195","url":"https:\/\/findmypart.shop\/products\/r-b-13-63039021-circuit-board-w-mr-50l","provider":"Find My Part","version":"1.0","type":"link"}