Ariston SX 20 MFFI CE Boiler Fan Assembly 569431

Product Overview

The Ariston SX 20 MFFI CE Boiler Fan Assembly (Part Number: 569431) is a combustion and flue fan component designed for the Ariston SX 20 MFFI CE boiler system.

The fan forms part of the boiler's combustion air and flue system, providing the airflow required during burner operation and assisting with the removal of combustion products through the appliance's flue.

Correct fan operation is important for the boiler to complete its normal ignition sequence and maintain safe operating conditions.

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 boiler fan is an electrically driven component that supports combustion airflow and the removal of flue gases.

It operates alongside the boiler's air pressure switch and ignition controls. The air pressure monitoring system helps confirm that the required airflow conditions are established before burner ignition.

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 airflow-related faults.

• Boiler entering a safety lockout.

• 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 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 operation, flue integrity, combustion and operational safety checks must be completed before the boiler is returned to service.