{"product_id":"ferroli-combi-76-ff-77-ff-boiler-fan-39800440","title":"FERROLI COMBI 76 FF \u0026 77 FF BOILER FAN 39800440","description":"\u003ch1\u003e\u003cspan\u003eFerroli Combi 76 FF 77 FF Boiler Fan Assembly 39800440\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\u003eFerroli Boiler Fan Assembly (Part Number: 39800440)\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e is a combustion and flue fan component designed for the \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eFerroli Combi 76 FF and 77 FF\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e boiler models.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe fan forms part of the boiler's room-sealed combustion system, helping supply the airflow required for burner operation and remove combustion products through the flue.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eCorrect fan operation is important for establishing the required airflow conditions and supporting the boiler's normal ignition and combustion processes.\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 fan assembly is an electrically driven component responsible for moving air through the boiler's combustion and flue system. It operates alongside the air pressure switch and associated controls to support safe burner operation.\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 combustion airflow-related faults.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eBoiler failing to operate due to an airflow safety condition.\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's electrical supply before carrying out any work and follow the manufacturer's servicing instructions. Ensure the fan and 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":"FERROLI","offers":[{"title":"New Other","offer_id":51283753795687,"sku":"N6605","price":89.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0615\/0923\/8887\/files\/edited-photo-2026-11-06T114421.737.jpg?v=1793965625","url":"https:\/\/nationalboilerspares.co.uk\/products\/ferroli-combi-76-ff-77-ff-boiler-fan-39800440","provider":"National Boiler Spares","version":"1.0","type":"link"}