Andrews Pilot Assembly CSC Z272

The Pilot Assembly CSC is a pilot burner assembly supplied by Andrews under part number Z272. It forms the ignition and flame-proving stage of the gas train on Andrews water heating appliances, providing the standing pilot flame that lights the main burner. This version is configured for natural gas (NG).

• The pilot will not light, or lights only intermittently
• The pilot flame lights but will not hold once the button or control is released
• The pilot flame is weak, yellow, or visibly unstable rather than a steady blue
• Repeated lockouts or shutdowns traced to a failed flame-proving signal at the pilot
• Visible soot, corrosion, or physical damage to the pilot assembly or its electrode

• Confirm the appliance model against the manufacturer's parts list to verify Z272 is the correct pilot assembly
• Check that the appliance is set up for natural gas, as this assembly is the NG version
• Inspect the existing pilot assembly and its connections so the fault is correctly identified before replacement
• Confirm the part number on the existing component matches Z272 where markings are still legible