BoilerFaultCodes.com

Potterton Performa SL HE 9 2 Fault Codes

Regular Natural Gas 9.2 kW 2007-2010 Discontinued
GC Number: 41-591-92

Replaced by: Promax SL

This boiler uses LED flash patterns

Count the flashes in one repeating group before the pause. That number is your fault code. Do not reset until you have noted it. How to read fault codes →

Most common fault codes

Air Proving LOCKOUT
Your boiler has stopped working because it cannot confirm that harmful exhaust gases are being safely cleared through the flue pipe.
Gas Safe engineer required · £120-280
APS Stuck Fault
Your boiler has stopped working because its internal safety switch is stuck and cannot confirm it is safe to start the burner.
Gas Safe engineer required · £120-£240
Casting Thermistor Fault
Your boiler has detected a problem with a temperature sensor on the main internal heat exchanger, causing it to shut down for safety.
Gas Safe engineer required · £90-180

All 26 fault codes

Code Severity Plain English
Air Proving LOCKOUT High Your boiler has stopped working because it cannot confirm that harmful exhaust gases are being safely cleared through the flue pipe.
APS Stuck Fault High Your boiler has stopped working because its internal safety switch is stuck and cannot confirm it is safe to start the burner.
Casting Thermistor Fault High Your boiler has detected a problem with a temperature sensor on the main internal heat exchanger, causing it to shut down for safety.
Electrical Supply Fault High Your boiler is not receiving the steady electrical voltage it needs to safely fire up and run.
False Flame Fault High Your boiler thinks a flame is present when it shouldn't be, causing the system to shut down for safety purposes.
Flow Thermistor Fault High Your boiler has switched itself off because the internal temperature sensors are giving conflicting or unusual readings, meaning it cannot safely regulate the heat.
Lockout (Red) flashing High Your boiler has sensed it is getting too hot and has shut itself down as a safety precaution.
Lockout (Red) Flashing, Burner (Green) Flashing, Mains (Green) On High Your boiler has stopped working because water is not moving through the system properly, causing it to overheat and shut down for safety.
Lockout (Red) Flashing, Burner (Green) Off, Mains (Green) On High Your boiler has switched itself off for safety because it has become too hot and needs to cool down before it can be reset.
Lockout (Red) Flashing, Burner (Green) On, Mains (Green) Off High Your boiler has detected a problem with one of its internal temperature sensors, causing the system to shut down for safety.
Lockout (Red) Flashing, Burner (Green) On, Mains (Green) On High Your boiler has detected a problem with its internal temperature sensor and has shut down as a safety precaution.
Lockout (Red) light flashing once a second High Your boiler has switched itself off because it has detected it is getting too hot, likely due to a circulation problem or a temporary blockage.
Lockout (Red) Off, Burner (Green) Flashing, Mains (Green) On High Your boiler thinks it sees a flame even though it hasn't started yet, which is causing it to stop for safety.
Lockout (Red) Off, Burner (Green) Off, Mains (Green) Off High Your boiler is not receiving any electricity, which means the display lights are off and the system cannot start.
Lockout (Red) Off, Burner (Green) On, Mains (Green) On High Your boiler's internal safety fan system is failing to signal that it is safe to ignite, preventing the heating from starting.
Lockout (Red) On High Your boiler has tried and failed to light the flame several times, so it has shut itself down for safety.
Lockout (Red) On, Burner (Green) Flashing, Mains (Green) On High Your boiler has stopped working because it cannot confirm that the fan is safely clearing waste gases from the system.
Lockout (Red) On, Burner (Green) Off, Mains (Green) On High Your boiler has failed to light the gas flame and has shut down as a safety precaution.
Lockout (Red) On, Burner (Green) On, Mains (Green) On High Your boiler’s internal control board has suffered a critical failure and can no longer safely operate the heating system.
Mains Neon On, All other Neons Off High Your boiler has lost power or detected an internal safety fault that is preventing it from firing up.
Mains Neon On, Flashing Boiler On & Restart Neons High Your boiler has failed to light the gas flame and needs a simple manual restart to try firing up again.
Mains Neon On, Flashing Boiler On Neon High Your boiler has failed to light, which is often caused by a temporary disruption to your gas supply.
Mains Neon On, Flashing Restart Neon High Your boiler has become too hot and has automatically shut down for safety.
Mains On (Green) light flashing Low Your boiler is receiving electrical power but has been placed into standby mode or is waiting for a command to start heating.
PCB Fault High Your boiler has experienced an internal computer failure and has shut down for safety, meaning it will no longer provide heating or hot water.
Water Circulation LOCKOUT High Your boiler has switched itself off because it has detected that water is failing to move through the system correctly, causing it to overheat.

Potterton Performa SL HE 9 2 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.