Chaffoteaux Centora Green System 24 Fault codes & diagnostics

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

System Natural Gas 24 kW 2002-2007 Discontinued
GC Number 41-980-12
Download the Chaffoteaux Centora Green System 24 manual The official installation & service manual (PDF) — the exact document these fault codes were verified against. PDF

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Severity at a glance

Each cell = one fault code. Hover to identify.
12 High 2 Low

Which version do you have?

The GC number on your boiler's data badge identifies the exact appliance and production years, as recorded in the UK Product Characteristics Database.

GC number Appliance (register name) Produced
41-980-12 Centora Green System 24 2002–2007

Appliance names and production years are taken from the UK Product Characteristics Database (the SAP/SEDBUK register). Where a GC number is also printed in this model's own manufacturer manual, both sources were checked to agree.

All 14 documented codes

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01

Your boiler has detected that it is running too hot and has automatically shut down for safety to prevent damage.

High Engineer only £120-250 Community-sourced, unverified

Parts commonly replaced

  • NTC Temperature Sensor
  • Circulation Pump
  • Heat Exchanger

Related codes

03

Your boiler is trying to start but cannot sense the flame required to heat your water or radiators.

High Engineer only £150-350 Community-sourced, unverified

Parts commonly replaced

  • Ionisation electrode
  • Ignition lead
  • Gas valve
  • Printed Circuit Board

Related codes

05

Your boiler has detected that the temperature is low enough to risk freezing and has automatically started its pump to keep water moving and protect the system.

Low Engineer only Community-sourced, unverified
07

Your boiler has detected that water is not flowing around your heating system properly, so it has shut down to prevent itself from overheating.

High Engineer only £150-300 Community-sourced, unverified

Parts commonly replaced

  • Circulation pump
  • System filter
  • Flow sensor

Related codes

08

Your boiler has stopped working because the water pressure inside the heating system has dropped too low to operate safely.

High DIY-safe £80-120 Community-sourced, unverified

What to check first

  1. Locate the filling loop (usually a silver braided hose with one or two valves underneath the boiler)
  2. Slowly open the valve to allow water to enter the system until the pressure gauge reads between 1.0 and 1.5 bar
  3. Close the valve tightly and check that the error code clears

Parts commonly replaced

  • Pressure relief valve
  • Expansion vessel
  • Pressure sensor

Related codes

11

Your boiler has stopped working because a sensor that measures the water temperature for your radiators has likely disconnected or broken.

High Engineer only £120-220 Community-sourced, unverified

Parts commonly replaced

  • Central heating NTC thermistor
  • Wiring harness

Related codes

12

Your boiler's temperature sensor is failing to provide a reading, so it has shut down to prevent overheating.

High Engineer only £120-220 Community-sourced, unverified

Parts commonly replaced

  • Central Heating NTC Sensor
  • Wiring harness

Related codes

18

Your boiler is struggling to stay lit and is automatically trying to restart itself after losing the flame.

High Engineer only £120-250 Community-sourced, unverified

Parts commonly replaced

  • Ignition electrode
  • Flame sensor
  • Gas valve

Related codes

20

Your boiler has detected an issue with the internal electrical connections that is preventing it from operating correctly.

High Engineer only £120-250 Community-sourced, unverified

Parts commonly replaced

  • Main PCB
  • Wiring harness
  • Connector block

Related codes

23

Your boiler has stopped working because the internal fan that clears waste gases is spinning too slowly or has stopped completely.

High Engineer only £180-350 Community-sourced, unverified

Parts commonly replaced

  • Fan assembly
  • Printed Circuit Board (PCB)
  • Wiring harness

Related codes

24

Your boiler has detected an issue with the internal fan that moves air and exhaust gases, causing it to shut down for safety reasons.

High Engineer only £180-350 Community-sourced, unverified

Parts commonly replaced

  • Fan assembly
  • Printed Circuit Board (PCB)
  • Wiring harness

Related codes

31

Your boiler's internal computer is having trouble talking to the control panel, which is preventing the system from operating normally.

High Engineer only £150-250 Community-sourced, unverified

Parts commonly replaced

  • Display PCB
  • Wiring loom
  • Main control board

Related codes

32

Your boiler's electronic brain is unable to communicate with its internal controls, causing the system to stop working entirely.

High Engineer only £200-450 Community-sourced, unverified

Parts commonly replaced

  • Main PCB
  • Wiring harness

Related codes