{"product_id":"glowworm-micron-30ff-40ff-boiler-fan-s227033","title":"GLOWWORM MICRON 30FF 40FF BOILER FAN S227033","description":"\u003ch1\u003e\u003cspan\u003eGlow-worm Micron 30FF 40FF Boiler SIFAN Fan Assembly S227033\u003c\/span\u003e\u003c\/h1\u003e\n\u003ch2\u003e\u003cspan\u003eProduct Overview\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cspan\u003eThe \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eGlow-worm Micron Boiler Fan Assembly (Part Number: S227033)\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e is a combustion and flue fan component designed for selected \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eGlow-worm Micron 30FF and 40FF\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e heating systems.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003ePart number \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eS227033\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e is identified as a \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eSIFAN Fan Assembly\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, associated with the boiler's combustion airflow and flue system.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe fan provides the airflow required during burner operation and supports the removal of combustion products through the appliance's flue system.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eCorrect fan operation is important for completing the boiler's normal ignition sequence and maintaining safe operating conditions.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eℹ️ Product Condition Options:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThis part may be available in \u003c\/span\u003e\u003cem\u003e\u003cspan\u003eNew\u003c\/span\u003e\u003c\/em\u003e\u003cspan\u003e or \u003c\/span\u003e\u003cem\u003e\u003cspan\u003eRefurbished\u003c\/span\u003e\u003c\/em\u003e\u003cspan\u003e condition. Please select your desired option from the dropdown menu above. Refurbished fans should be professionally inspected and tested to confirm correct operation before installation.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cspan\u003eTechnical Insight \u0026amp; Common Failure Symptoms\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cspan\u003eThe SIFAN assembly is an electrically driven component that supports combustion airflow and flue gas discharge.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eAccording to Glow-worm's servicing documentation, the fan assembly is mounted to the flue hood and incorporates electrical connections and an associated air pressure sensing tube.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe fan works alongside the boiler's air pressure switch and ignition controls to establish the required operating conditions before burner ignition.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eOver time, fan performance may be affected by motor wear, bearing deterioration, mechanical damage or electrical faults.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003ePossible symptoms that may indicate a fan or associated component problem include:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eFan failing to start or operate correctly.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eIntermittent fan operation.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eUnusual grinding, rattling or vibration from the fan assembly.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eBoiler failing to complete its normal ignition sequence.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eBurner failing to ignite when the required airflow conditions are not established.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eAir pressure switch or airflow-related faults.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eBoiler entering a safety lockout.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eVisible damage or deterioration affecting the fan assembly.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan\u003eThese symptoms do \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003enot necessarily confirm a faulty fan\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, as similar problems may result from electrical connections, air pressure switches, ignition controls or restrictions within the combustion and flue system. Correct professional diagnosis should be carried out before replacing the fan.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cspan\u003eSafety Advice\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cem\u003e\u003cspan\u003eBoiler fan assemblies are safety-critical components within the appliance's combustion and flue system. Inspection, removal and installation must only be carried out by a \u003c\/span\u003e\u003c\/em\u003e\u003cstrong\u003e\u003cem\u003e\u003cspan\u003eGas Safe registered engineer\u003c\/span\u003e\u003c\/em\u003e\u003c\/strong\u003e\u003cem\u003e\u003cspan\u003e who is suitably qualified for the appliance and work being undertaken.\u003c\/span\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003e\u003cspan\u003eAlways isolate the appliance before carrying out any work and follow the manufacturer's servicing instructions. Ensure the fan and all associated connections are correctly installed. Appropriate fan operation, air pressure switch, flue integrity, combustion and operational safety checks must be completed before the boiler is returned to service.\u003c\/span\u003e\u003c\/em\u003e\u003c\/p\u003e","brand":"Glowworm","offers":[{"title":"New \/ New Other","offer_id":50960825024615,"sku":"N7758","price":139.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0615\/0923\/8887\/files\/edited-photo-2026-11-02T134853.357.jpg?v=1793627612","url":"https:\/\/nationalboilerspares.co.uk\/products\/glowworm-micron-30ff-40ff-boiler-fan-s227033","provider":"National Boiler Spares","version":"1.0","type":"link"}