Potterton Statesman Fault codes & diagnostics

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

Regular Oil 15-44 kW 1980-2005 Discontinued

Replaced by: Potterton Statesman System/Utility

The fault code is already on your display

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

Severity at a glance

Each cell = one fault code. Hover to identify.
5 Emergency 8 High

All 13 documented codes

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10

Your boiler is struggling to burn fuel correctly, which is causing smoke, bad smells, or a thumping noise inside the unit.

Emergency Engineer only £150-300

Parts commonly replaced

  • Solenoid coil
  • Pump assembly
  • Oil nozzle
  • Flexible oil line

Related codes

12

Your boiler is struggling to burn fuel cleanly, which could be creating harmful fumes inside your home.

Emergency Engineer only £150-300

Parts commonly replaced

  • Oil burner nozzle
  • Oil filter
  • Electrode assembly
13

Your boiler is struggling to burn fuel cleanly, which is causing smoke, bad smells, or vibrating noises inside the unit.

Emergency Engineer only £150-300

Parts commonly replaced

  • Oil burner nozzle
  • Oil pump solenoid valve
  • Photocell

Related codes

14

Your boiler is struggling to burn fuel properly, which is causing fumes, strange smells, or a thumping sound because the internal airflow is blocked by dust or debris.

Emergency Engineer only £150-300

Parts commonly replaced

  • Burner assembly
  • Fan unit
  • Oil nozzle

Related codes

15

Your boiler is failing to burn fuel properly, which is causing fumes to leak out and potentially releasing dangerous gases into your home.

Emergency Engineer only £150-350

Parts commonly replaced

  • Nozzle
  • Oil filter
  • Flexi oil line
  • Combustion seal
Boiler at lock out

Your boiler has stopped working as a safety precaution and needs to be manually restarted to see if it can clear the internal error.

High DIY-safe £120-300

What to check first

  1. Locate the reset button on the front control panel
  2. Press and hold the reset button for 3-5 seconds
  3. Wait a few minutes to see if the burner ignites; if it locks out again immediately, stop and call a professional

Parts commonly replaced

  • Ignition electrode
  • Flame rectification probe
  • Control PCB
Burner lock out neon

Your boiler has failed to light the flame after several attempts and has shut itself down for safety.

High Engineer only £120-250

Parts commonly replaced

  • Photocell
  • Ignition transformer
  • Oil pump

Related codes

Burner Lockout

Your boiler has stopped working because the oil burner has failed to ignite, so it has safely shut itself down to prevent fuel building up.

High Engineer only £120-250

Parts commonly replaced

  • Photocell
  • Ignition Electrodes
  • Nozzle
  • Oil Pump
Limit stat tripped

Your boiler has automatically shut down because it overheated, likely due to a flow issue or a sensor malfunction.

High Engineer only £120-250

Parts commonly replaced

  • Limit thermostat
  • Pump
  • Diverter valve
Lock Out After 15 Seconds

Your boiler is lighting, but it cannot confirm the flame is stable, so it shuts down for safety reasons to prevent fuel from building up.

High Engineer only £150-300

Parts commonly replaced

  • Flame rectification probe
  • Control box
  • Photo cell

Related codes

Lockout

Your boiler has stopped itself from running due to a fuel or ignition issue, and it requires a manual reset to attempt to start again.

High Engineer only £120-250

Parts commonly replaced

  • Photocell
  • Ignition electrodes
  • Oil burner pump
  • Control box

Related codes

Locks Out In Morning Only

Your boiler is struggling to ignite when it first wakes up in the morning, likely because it is having trouble breathing or moving water correctly.

High Engineer only £150-300

Parts commonly replaced

  • Non-return valve
  • Burner seal
  • Air pressure switch

Related codes

Overheat

Your boiler has detected that it is running too hot and has automatically switched itself off to prevent potential damage.

High Engineer only £120-250

Parts commonly replaced

  • Limit Thermostat
  • Pump
  • Diverter Valve
  • Heat Exchanger