Glow-worm Micron 30FF 40FF Boiler SIFAN Fan Assembly S227033

Product Overview

The Glow-worm Micron Boiler Fan Assembly (Part Number: S227033) is a combustion and flue fan component designed for selected Glow-worm Micron 30FF and 40FF heating systems.

Part number S227033 is identified as a SIFAN Fan Assembly, associated with the boiler's combustion airflow and flue system.

The fan provides the airflow required during burner operation and supports the removal of combustion products through the appliance's flue system.

Correct fan operation is important for completing the boiler's normal ignition sequence and maintaining 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 SIFAN assembly is an electrically driven component that supports combustion airflow and flue gas discharge.

According 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.

The fan works alongside the boiler's air pressure switch and ignition controls to establish the required operating conditions 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, flue integrity, combustion and operational safety checks must be completed before the boiler is returned to service.