{"product_id":"braemar-ducted-heater-circuit-board-pcb-th4-th5-sy639451","title":"Braemar Ducted Heater Circuit Board PCB TH4 TH5","description":"\u003cdiv style=\"text-align: left;\"\u003e\n\u003cp style=\"font-size: 16px; line-height: 1.6; margin-bottom: 20px;\"\u003eThis Braemar Ducted Heater Circuit Board (PCB) is your direct replacement for specific TH4, TH5, TE, and TG series gas heaters, getting faulty units back up and running. It's a critical component, handling ignition, flame sensing, and fan control, which means a dead board usually means a dead heater. We've all been called out to a chilly house in winter, and having the right control board on hand saves you a trip and keeps the customer happy.\u003c\/p\u003e\n\u003cp style=\"font-size: 16px; line-height: 1.6; margin-bottom: 20px;\"\u003eDesigned to suit a range of Braemar's popular ducted gas heating systems, this PCB brings reliability back to your installs and service calls across Australia's varied climate.\u003c\/p\u003e\n\u003ch2 style=\"color: #007acc; border-bottom: 2px solid #f0f0f0; padding-bottom: 8px; margin-top: 35px;\"\u003eBest For\u003c\/h2\u003e\n\u003cul style=\"font-size: 16px; line-height: 1.6; margin-bottom: 20px;\"\u003e\n\u003cli\u003eHVAC Technicians performing ducted gas heater repairs.\u003c\/li\u003e\n\u003cli\u003eService and maintenance teams for residential heating systems.\u003c\/li\u003e\n\u003cli\u003eHomeowners with competent electrical skills diagnosing their own Braemar heater faults.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 style=\"color: #007acc; border-bottom: 2px solid #f0f0f0; padding-bottom: 8px; margin-top: 35px;\"\u003eCompatibility\u003c\/h2\u003e\n\u003cp style=\"font-size: 16px; line-height: 1.6; margin-bottom: 20px;\"\u003eThis circuit board, part number SY639451 (also known as Seeley PN 639451), is a direct fit for the following Braemar ducted gas heater models:\u003c\/p\u003e\n\u003cul style=\"font-size: 16px; line-height: 1.6; margin-bottom: 20px;\"\u003e\n\u003cli\u003eTH4 Series\u003c\/li\u003e\n\u003cli\u003eTH5 Series\u003c\/li\u003e\n\u003cli\u003eTE Series\u003c\/li\u003e\n\u003cli\u003eTG Series\u003c\/li\u003e\n\u003cli\u003eTX Series\u003c\/li\u003e\n\u003cli\u003eTA Series\u003c\/li\u003e\n\u003cli\u003eTE4 Models\u003c\/li\u003e\n\u003cli\u003eTE5 Models\u003c\/li\u003e\n\u003cli\u003eTG4 Models\u003c\/li\u003e\n\u003cli\u003eTG5 Models\u003c\/li\u003e\n\u003cli\u003eTSS Models\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp style=\"font-size: 16px; line-height: 1.6; margin-bottom: 20px;\"\u003eIf you're running a different model, check fittings and specs before ordering.\u003c\/p\u003e\n\u003ch2 style=\"color: #007acc; border-bottom: 2px solid #f0f0f0; padding-bottom: 8px; margin-top: 35px;\"\u003eFeatures\u003c\/h2\u003e\n\u003cul style=\"font-size: 16px; line-height: 1.6; margin-bottom: 20px;\"\u003e\n\u003cli\u003eDirect replacement Braemar Heater Circuit Board.\u003c\/li\u003e\n\u003cli\u003eControls ignition, flame detection, and fan operation.\u003c\/li\u003e\n\u003cli\u003eEssential for restoring full functionality to specified Braemar ducted heaters.\u003c\/li\u003e\n\u003cli\u003ePart number SY639451 \/ Seeley PN 639451 for clear identification.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 style=\"color: #007acc; border-bottom: 2px solid #f0f0f0; padding-bottom: 8px; margin-top: 35px;\"\u003eWhat's in the Box\u003c\/h2\u003e\n\u003cul style=\"font-size: 16px; line-height: 1.6; margin-bottom: 20px;\"\u003e\n\u003cli\u003e1 x Braemar Ducted Heater Circuit Board PCB (SY639451 \/ 639451)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 style=\"color: #007acc; border-bottom: 2px solid #f0f0f0; padding-bottom: 8px; margin-top: 35px;\"\u003eUsing It on the Job\u003c\/h2\u003e\n\u003col style=\"font-size: 16px; line-height: 1.6; margin-bottom: 20px;\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eIsolate Power:\u003c\/strong\u003e Always shut off mains power to the heater at the breaker and confirm with a multimeter before touching any wiring.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccess the Board:\u003c\/strong\u003e Carefully remove the heater's access panel to expose the existing PCB.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDocument Connections:\u003c\/strong\u003e Take clear photos or label all wiring connections to the old board before removal.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemove Old Board:\u003c\/strong\u003e Disconnect all wiring and mounting screws from the faulty PCB.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall New Board:\u003c\/strong\u003e Mount the new SY639451 PCB securely and reconnect all wiring precisely as documented.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest Operation:\u003c\/strong\u003e Restore power, follow the heater's start-up sequence, and check for correct ignition, fan operation, and any fault codes.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch2 style=\"color: #007acc; border-bottom: 2px solid #f0f0f0; padding-bottom: 8px; margin-top: 35px;\"\u003eLimitations \u0026amp; Safety Notes\u003c\/h2\u003e\n\u003cul style=\"font-size: 16px; line-height: 1.6; margin-bottom: 20px;\"\u003e\n\u003cli\u003eInstallation and electrical work on gas appliances should only be performed by a licenced gasfitter or electrician.\u003c\/li\u003e\n\u003cli\u003eAlways isolate power and lockout before commencing work to prevent accidental energisation.\u003c\/li\u003e\n\u003cli\u003eEnsure the replacement board (SY639451) matches the original board's specifications and part number for your specific Braemar model.\u003c\/li\u003e\n\u003cli\u003eIncorrect installation can lead to damage to the heater or pose safety risks.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cblockquote style=\"border-left: 4px solid #007acc; background-color: #f9f9f9; font-style: italic; padding: 15px; margin: 20px 0;\"\u003e\n\u003cp style=\"font-size: 16px; line-height: 1.6; margin-bottom: 20px;\"\u003eTradie Pro Tip: Before you condemn the board, always check the simpler stuff first. Look for loose connections, faulty ignitors, or clogged pressure switches. A new board won't fix a separate peripheral fault.\u003c\/p\u003e\n\u003c\/blockquote\u003e\n\u003ch2 style=\"color: #007acc; border-bottom: 2px solid #f0f0f0; padding-bottom: 8px; margin-top: 35px;\"\u003ePair With\u003c\/h2\u003e\n\u003cp style=\"font-size: 16px; line-height: 1.6; margin-bottom: 20px;\"\u003eConsider pairing this with a reliable multimeter for electrical diagnostics, or a new ignitor or flame sensor if you're doing a full service on a problematic Braemar ducted heater. Check out our range of test instruments and heating spares.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c!-- Automated FAQ Schema --\u003e\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"FAQPage\",\n  \"mainEntity\": [\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What Braemar heater models is this control board compatible with?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"This SY639451 circuit board is designed for Braemar TH4, TH5, TE, TG, TX, TA, TE4, TE5, TG4, TG5, and TSS series ducted gas heaters. It's also known by Seeley PN 639451. Always cross-reference the part number on your existing board before ordering to ensure correct fitment.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Do I need special tools or licenses to replace this PCB?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"While basic hand tools like screwdrivers and a multimeter are needed, working on gas appliances and their electrical systems requires a licensed gasfitter and\/or electrician in Australia. Incorrect installation can create significant safety hazards for the home occupants.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"How can I verify this board is the cause of my heater's fault?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Before replacing the PCB, thoroughly diagnose the system. Check for stable power supply, inspect sensors, ignitors, and pressure switches, and verify wiring connections. A faulty peripheral can often mimic a board issue, so eliminate these common culprits first using a multimeter.\"\n      }\n    }\n  ]\n}\n\u003c\/script\u003e","brand":"Braemar","offers":[{"title":"Default Title","offer_id":43608040898619,"sku":"SY639451","price":304.74,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0316\/7787\/4235\/files\/695_SY639451_1.png?v=1781160618","url":"https:\/\/www.hvacshop.com.au\/products\/braemar-ducted-heater-circuit-board-pcb-th4-th5-sy639451","provider":"HVAC Supply Shop","version":"1.0","type":"link"}