{"product_id":"heater-4kw-x300937","title":"MASTER SPAS Heater 4kW  - X300937","description":"\u003ch2\u003eMASTER SPAS Heater 4kW  - X300937\u003c\/h2\u003e\n\u003cp\u003eHeater 4 kW with M7 sensors(V\/N 55950)\u003c\/p\u003e\n\u003ch5\u003eWhat our Experts Think\u003c\/h5\u003e\n\u003cul\u003e\n\u003cli data-section-id=\"e6g2im\" data-start=\"138\" data-end=\"212\"\u003e\n\u003cp data-start=\"140\" data-end=\"212\"\u003e\u003cstrong data-start=\"140\" data-end=\"162\"\u003eEfficient Heating:\u003c\/strong\u003e 4 kW output warms spa water quickly and evenly.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"17fbsr5\" data-start=\"213\" data-end=\"295\"\u003e\n\u003cp data-start=\"215\" data-end=\"295\"\u003e\u003cstrong data-start=\"215\" data-end=\"234\"\u003eDurable Design:\u003c\/strong\u003e Built to withstand high temperatures and constant spa use.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"n7mtsa\" data-start=\"296\" data-end=\"395\"\u003e\n\u003cp data-start=\"298\" data-end=\"395\"\u003e\u003cstrong data-start=\"298\" data-end=\"320\"\u003eEasy Installation:\u003c\/strong\u003e Compatible with MASTER SPAS systems for seamless replacement or upgrade.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"14n6vzh\" data-start=\"396\" data-end=\"498\"\u003e\n\u003cp data-start=\"398\" data-end=\"498\"\u003e\u003cstrong data-start=\"398\" data-end=\"423\"\u003eReliable Performance:\u003c\/strong\u003e Maintains consistent water temperature for a comfortable spa experience.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"93g4zb\" data-start=\"499\" data-end=\"595\"\u003e\n\u003cp data-start=\"501\" data-end=\"595\"\u003e\u003cstrong data-start=\"501\" data-end=\"522\"\u003eEnergy-Conscious:\u003c\/strong\u003e Designed to operate efficiently without unnecessary power consumption.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"covn52\" data-start=\"596\" data-end=\"689\"\u003e\n\u003cp data-start=\"598\" data-end=\"689\"\u003e\u003cstrong data-start=\"598\" data-end=\"627\"\u003eTrusted by Professionals:\u003c\/strong\u003e Recommended for both residential and commercial spa setups.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch5\u003eQ\u0026amp;A\u003c\/h5\u003e\n\u003cdiv class=\"flex flex-col text-sm\"\u003e\n\u003carticle class=\"text-token-text-primary w-full focus:outline-none [--shadow-height:45px] has-data-writing-block:pointer-events-none has-data-writing-block:-mt-(--shadow-height) has-data-writing-block:pt-(--shadow-height) [\u0026amp;:has([data-writing-block])\u0026gt;*]:pointer-events-auto scroll-mt-[calc(var(--header-height)+min(200px,max(70px,20svh)))]\" dir=\"auto\" data-turn-id=\"a57ef4b6-7c3b-4057-977c-a7e47a8a8eb3\" data-testid=\"conversation-turn-22\" data-scroll-anchor=\"true\" data-turn=\"assistant\" tabindex=\"-1\"\u003e\n\u003cdiv class=\"text-base my-auto mx-auto pb-10 [--thread-content-margin:var(--thread-content-margin-xs,calc(var(--spacing)*4))] @w-sm\/main:[--thread-content-margin:var(--thread-content-margin-sm,calc(var(--spacing)*6))] @w-lg\/main:[--thread-content-margin:var(--thread-content-margin-lg,calc(var(--spacing)*16))] px-(--thread-content-margin)\"\u003e\n\u003cdiv class=\"[--thread-content-max-width:40rem] @w-lg\/main:[--thread-content-max-width:48rem] mx-auto max-w-(--thread-content-max-width) flex-1 group\/turn-messages focus-visible:outline-hidden relative flex w-full min-w-0 flex-col agent-turn\" tabindex=\"-1\"\u003e\n\u003cdiv class=\"flex max-w-full flex-col gap-4 grow\"\u003e\n\u003cdiv data-message-author-role=\"assistant\" data-message-id=\"09b064dc-42bd-4489-8f84-99f9f881d717\" dir=\"auto\" data-message-model-slug=\"gpt-5-mini\" class=\"min-h-8 text-message relative flex w-full flex-col items-end gap-2 text-start break-words whitespace-normal [.text-message+\u0026amp;]:mt-1\"\u003e\n\u003cdiv class=\"flex w-full flex-col gap-1 empty:hidden\"\u003e\n\u003cdiv class=\"markdown prose dark:prose-invert w-full wrap-break-word light markdown-new-styling\"\u003e\n\u003cp data-start=\"84\" data-end=\"223\"\u003e\u003cstrong data-start=\"84\" data-end=\"142\"\u003eQ1: What is the MASTER SPAS MS8500 PC Board (X801135)?\u003c\/strong\u003e\u003cbr data-start=\"142\" data-end=\"145\"\u003eA: A direct OEM replacement spa control circuit board for MASTER SPAS systems.\u003c\/p\u003e\n\u003cp data-start=\"225\" data-end=\"339\"\u003e\u003cstrong data-start=\"225\" data-end=\"254\"\u003eQ2: What does it control?\u003c\/strong\u003e\u003cbr data-start=\"254\" data-end=\"257\"\u003eA: Manages pumps, heater, sensors, timing, safety logic, and system communication.\u003c\/p\u003e\n\u003cp data-start=\"341\" data-end=\"475\"\u003e\u003cstrong data-start=\"341\" data-end=\"376\"\u003eQ3: Is it a direct replacement?\u003c\/strong\u003e\u003cbr data-start=\"376\" data-end=\"379\"\u003eA: Yes for spas that require the MS8500 control board; verify your spa model\/spec before buying.\u003c\/p\u003e\n\u003cp data-start=\"477\" data-end=\"585\"\u003e\u003cstrong data-start=\"477\" data-end=\"498\"\u003eQ4: Key benefits?\u003c\/strong\u003e\u003cbr data-start=\"498\" data-end=\"501\"\u003eA: Reliable OEM performance, stable system logic, and precise function coordination.\u003c\/p\u003e\n\u003cp data-start=\"587\" data-end=\"696\" data-is-last-node=\"\" data-is-only-node=\"\"\u003e\u003cstrong data-start=\"587\" data-end=\"608\"\u003eQ5: Installation?\u003c\/strong\u003e\u003cbr data-start=\"608\" data-end=\"611\"\u003eA: Replace your old board using correct wiring—professional installation recommended.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/article\u003e\n\u003c\/div\u003e\n\u003ch5\u003eMaintenance Tips\u003c\/h5\u003e\n\u003cul\u003e\n\u003cli data-section-id=\"1n0fue5\" data-start=\"58\" data-end=\"140\"\u003e\n\u003cp data-start=\"60\" data-end=\"140\"\u003e\u003cstrong data-start=\"60\" data-end=\"80\"\u003ePower Off First:\u003c\/strong\u003e Always disconnect spa power before inspection or service.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"180l30j\" data-start=\"141\" data-end=\"244\"\u003e\n\u003cp data-start=\"143\" data-end=\"244\"\u003e\u003cstrong data-start=\"143\" data-end=\"171\"\u003eInspect Heating Element:\u003c\/strong\u003e Check for scale buildup, corrosion, or damage; clean gently if needed.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"185hvv8\" data-start=\"245\" data-end=\"324\"\u003e\n\u003cp data-start=\"247\" data-end=\"324\"\u003e\u003cstrong data-start=\"247\" data-end=\"269\"\u003eCheck Connections:\u003c\/strong\u003e Ensure all wiring is secure and free from corrosion.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"18w4xwt\" data-start=\"325\" data-end=\"422\"\u003e\n\u003cp data-start=\"327\" data-end=\"422\"\u003e\u003cstrong data-start=\"327\" data-end=\"351\"\u003eMonitor Temperature:\u003c\/strong\u003e Verify thermostat and temperature sensors are functioning correctly.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"azjyc\" data-start=\"423\" data-end=\"514\"\u003e\n\u003cp data-start=\"425\" data-end=\"514\"\u003e\u003cstrong data-start=\"425\" data-end=\"441\"\u003eWinter Care:\u003c\/strong\u003e Drain and protect heater if spa will be unused in freezing conditions.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"xi1ozr\" data-start=\"515\" data-end=\"602\"\u003e\n\u003cp data-start=\"517\" data-end=\"602\"\u003e\u003cstrong data-start=\"517\" data-end=\"540\"\u003eAvoid Power Surges:\u003c\/strong\u003e Use surge protection to safeguard the heater’s electronics.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"MASTER SPAS","offers":[{"title":"Default Title","offer_id":45484560810175,"sku":"X300937","price":316.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0683\/5703\/0079\/files\/x300937-340x200.jpg?v=1775915516","url":"https:\/\/backyardprovider.com\/products\/heater-4kw-x300937","provider":"Your Outdoor Setup Starts Here","version":"1.0","type":"link"}