Potterton Kingfisher 2 RS60, RS80, RS100 Fault codes & diagnostics

2 fault codes with plain-English explanations, severity ratings, DIY guidance, and repair cost estimates.

Regular Natural Gas 17.6-29.3 kW 2001-2007 Discontinued
GC Numbers 41-607-1941-607-2041-607-2141-607-4641-607-4741-607-48

Replaced by: Kingfisher Mf

Download the Potterton Kingfisher 2 RS60, RS80, RS100 manual The official installation & service manual (PDF) — the exact document these fault codes were verified against. PDF

The fault code is already on your display

Note it down before pressing reset — resetting clears the code immediately. How to read fault codes →

Fault codes

All 2 documented codes

Tap any card for details

A.(1)

Your boiler is unable to start because it cannot light the small pilot flame, meaning you will have no heating or hot water.

High DIY-safe £100-£250

What to check first

  1. Check that your home's main gas emergency control valve is in the 'on' position.
  2. Verify if other gas appliances, like a cooker or hob, are working to confirm gas supply.
  3. If you have a prepaid gas meter, ensure you have sufficient credit and the meter hasn't locked out.

Parts commonly replaced

  • Thermocouple
  • Pilot Injector
  • Gas Control Valve
  • Ignition Electrode

Related codes

Full explanation for A.(1)
A.(3)

Your boiler is unable to start because the small starter flame is not lighting, likely due to a tiny blockage in the gas supply line.

High Engineer only £90-160

Parts commonly replaced

  • Pilot Injector
  • Thermocouple

Related codes

Full explanation for A.(3)