{"product_id":"bonaire-mb3-mb4-series-flame-sensor-ctsps5441603sp","title":"Bonaire MB3 \u0026 MB4 Series Flame Sensor","description":"\u003cdiv style=\"text-align: left;\"\u003e\n\u003cp style=\"font-size: 16px; line-height: 1.6; margin-bottom: 20px;\"\u003eThis Bonaire flame sensor is a genuine replacement part for your MB3 or MB4 series gas heater. Essential for safe and reliable ignition, it helps keep your ducted heating system running smoothly, especially during those colder Australian winters when you need it most.\u003c\/p\u003e\n\u003cp style=\"font-size: 16px; line-height: 1.6; margin-bottom: 20px;\"\u003eA working flame sensor is critical for heater safety, ensuring the gas valve only stays open when a flame is detected. Having a spare on hand or replacing a faulty one quickly helps keep call-backs to a minimum.\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 service on Bonaire gas heaters.\u003c\/li\u003e\n\u003cli\u003eApprentices learning gas heater maintenance.\u003c\/li\u003e\n\u003cli\u003eCompetent DIY owners maintaining Bonaire MB3 or MB4 units.\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 flame sensor is designed as a direct replacement for Bonaire MB3 and MB4 series ducted gas heating units. It matches Bonaire Part Number 5441603SP. If 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\u003eGenuine Bonaire spare part, ensuring reliable performance.\u003c\/li\u003e\n\u003cli\u003eDirect fit for Bonaire MB3 series gas heaters.\u003c\/li\u003e\n\u003cli\u003eDirect fit for Bonaire MB4 series gas heaters.\u003c\/li\u003e\n\u003cli\u003eCritical component for safe and efficient heater operation.\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\u003cli\u003e1 x Bonaire Flame Sensor (Bonaire PN 5441603SP)\u003c\/li\u003e\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 turn off the main power supply to the heating unit at the circuit breaker and disconnect the gas supply before starting work.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccess Panel Removal:\u003c\/strong\u003e Carefully remove the access panel to locate the existing flame sensor, typically near the burner assembly.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDisconnect:\u003c\/strong\u003e Unplug the electrical connection from the old flame sensor. Note its orientation for correct reinstallation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemove Old Sensor:\u003c\/strong\u003e Unscrew or unclip the old sensor from its mounting bracket. Inspect the burner area for any other issues while it's open.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall New Sensor:\u003c\/strong\u003e Mount the new Bonaire flame sensor, ensuring it's positioned correctly in relation to the flame. Reconnect the electrical plug securely.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest Operation:\u003c\/strong\u003e Restore gas and power, then initiate a heating cycle. Observe the burner ignition and ensure the flame sensor proves the flame, allowing the heater to continue running.\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\u003eThis part is only compatible with Bonaire MB3 and MB4 series gas heaters.\u003c\/li\u003e\n\u003cli\u003eGas appliance servicing should only be performed by a licensed gasfitter in accordance with Australian Standards.\u003c\/li\u003e\n\u003cli\u003eAlways ensure power and gas supplies are isolated before commencing any work on heating units.\u003c\/li\u003e\n\u003cli\u003eNever attempt to bypass safety devices like flame sensors.\u003c\/li\u003e\n\u003cli\u003eFollow all manufacturer guidelines for installation and maintenance.\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;\"\u003eTradie Pro Tip: Before replacing a flame sensor, try carefully cleaning the old one with a fine emery cloth or steel wool. Sometimes, a build-up of carbon can cause intermittent flame proving faults, saving you a parts trip if it's just dirty. Always check connections too!\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 flame sensor with other essential Bonaire heating spares like control boards, gas valves, or pressure switches to keep your service vehicle stocked. You might also find our range of general HVAC tools useful for diagnostics.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Bonaire","offers":[{"title":"Default Title","offer_id":43569063198779,"sku":"CTSPS5441603SP","price":26.24,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0316\/7787\/4235\/files\/588_CTSPS5441603SP_1.png?v=1780543711","url":"https:\/\/www.hvacshop.com.au\/products\/bonaire-mb3-mb4-series-flame-sensor-ctsps5441603sp","provider":"HVAC Supply Shop","version":"1.0","type":"link"}