Ferroli Combi 76 FF 77 FF Boiler Fan Assembly 39800440

Product Overview

The Ferroli Boiler Fan Assembly (Part Number: 39800440) is a combustion and flue fan component designed for the Ferroli Combi 76 FF and 77 FF boiler models.

The 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.

Correct fan operation is important for establishing the required airflow conditions and supporting the boiler's normal ignition and combustion processes.

ℹ️ Product Condition Options:

This part may be available in New or Refurbished 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.

Technical Insight & Common Failure Symptoms

The 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.

Over time, fan performance may be affected by motor wear, bearing deterioration, mechanical damage or electrical faults.

Possible symptoms that may indicate a fan or associated component problem include:

• Fan failing to start or operate correctly.

• Intermittent fan operation.

• Unusual grinding, rattling or vibration from the fan assembly.

• Boiler failing to complete its normal ignition sequence.

• Burner failing to ignite when the required airflow conditions are not established.

• Air pressure switch or combustion airflow-related faults.

• Boiler failing to operate due to an airflow safety condition.

• Visible damage or deterioration affecting the fan assembly.

These symptoms do not necessarily confirm a faulty fan, 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.

Safety Advice

Boiler 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 Gas Safe registered engineer who is suitably qualified for the appliance and work being undertaken.

Always 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.