Potterton Burner Complete FS70 5142427

The BURNER - COMPLETE (FS70) is a complete burner assembly manufactured by Potterton for Potterton Commercial Sirius boiler models. It forms the combustion assembly within the appliance and is supplied as a single complete unit rather than as individual burner components. It is listed under Potterton part number 5142427.

• The burner fails to light or does not sustain combustion during the ignition sequence.
• Visible damage, corrosion or distortion to the burner body or its combustion surfaces.
• Uneven flame pattern, or flames that lift, roll or burn inconsistently across the burner.
• Soot deposits or signs of incomplete combustion traced to the burner assembly.
• Repeated lockouts on the appliance that are attributed to the burner rather than to gas supply, ignition or controls.

• Confirm the appliance model against the fitment list, as the FS50 and FS70 variants use different assemblies.
• Check the existing burner and any associated gaskets or seals for condition before installation.
• Verify the appliance has been isolated from the gas and electrical supplies before removal work begins.
• Confirm the part number 5142427 against the appliance's own documentation.