BoilerFaultCodes.com

Potterton Kingfisher 2 RS60, RS80, RS100 Fault Codes

Regular Natural Gas 17.6-29.3 kW 1990-2005 Discontinued
GC Numbers: 41-590-3041-590-3141-590-32

Replaced by: Kingfisher Mf

The fault code is already on your display

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

All 18 fault codes

Code Severity Plain English
A.(1) High Your boiler is unable to start because it cannot light the small pilot flame, meaning you will have no heating or hot water.
A.(2) High Your boiler's small pilot flame is not staying lit, which is preventing the main burner from starting up to provide heat.
A.(3) High 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.
A.(4) High Your boiler is unable to start because the small pilot flame that ignites the main burner cannot be lit.
A.(5) High Your boiler is unable to light the small ignition flame needed to start the main heating process.
A.(6) High Your boiler is unable to start its pilot flame or has shut down to prevent the system from getting too hot.
B.(1) High Your boiler is failing to stay lit after you try to start it because the pilot light is going out as soon as you let go of the ignition button.
B.(2) High Your boiler is failing to stay lit because its internal safety sensor cannot confirm the pilot light is active.
B.(3) High Your boiler is struggling to keep its small pilot flame lit, which prevents the main burner from firing up to heat your home.
B.(4) High Your boiler's pilot light is going out as soon as you let go of the ignition button, preventing the main burner from firing up.
B.(5) High Your boiler is failing to stay lit because the safety mechanism thinks it is unsafe to keep the gas flowing.
C.(1) Low Your boiler is not firing up because the thermostat is turned too low or is currently switched off.
C.(2) High Your boiler's pilot light is on, but the main burner is not firing up because your external heating controls are not telling the boiler to start.
C.(3) High Your boiler's small pilot light is on, but the main burner is failing to ignite, meaning your heating and hot water will not work.
C.(4) High Your boiler's pilot light is on, but the main heating burner is failing to ignite because the temperature control switch is broken or incorrectly reading the heat levels.
C.(5) High Your boiler's small pilot light is on, but the main burner cannot engage to actually heat your home because the fuel path is obstructed.
D Emergency Your boiler is staying on and continuing to heat up even after it has reached the correct temperature, which can lead to overheating.
D.(1) Emergency Your boiler is not turning off when the water gets hot enough, which runs the risk of the system overheating.

Potterton Kingfisher 2 RS60, RS80, RS100 is discontinued — time for a new one?

Parts for discontinued models can be hard to find and expensive. A new A-rated boiler could save you money on both repairs and energy bills.

UK's #1 online installer
Boxt
Fixed-price online quotes. Next-day installation.
Get a free quote →
Heatable
Instant online boiler quotes from £1,499.
Get a free quote →
iHeat
Fast installation. Price match guarantee.
Get a free quote →

Affiliate links — we may earn a commission at no extra cost to you.