Chaffoteaux Centora Green System 30 Fault codes & diagnostics

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

System Natural Gas 30 kW 2002-2007 Discontinued
GC Number 41-980-31

Replaced by: Chaffoteaux PIGMA System

Download the Chaffoteaux Centora Green System 30 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 →

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
41-980-31 Centora Green System 30 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

Tap any card for details

01

Your boiler has detected that it is getting too hot and has automatically shut itself down to prevent any damage or safety risks.

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

Parts commonly replaced

  • Pump
  • Diverter valve
  • Heat exchanger
  • NTC thermistor

Related codes

03

Your boiler is failing to light the internal flame needed to heat your home's water.

High Engineer only £120-250 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 and has automatically switched on its internal pump to keep the water moving and prevent pipes from freezing.

Low Engineer only Community-sourced, unverified

Parts commonly replaced

  • NTC Temperature Sensor
  • PCB

Related codes

06

Your boiler has detected that the temperature is very low and has automatically activated its internal heating system to prevent the internal pipes from freezing.

Low Engineer only Community-sourced, unverified
07

Your boiler is struggling to move water through its heating system, which means it cannot heat your home safely.

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

Parts commonly replaced

  • Circulation pump
  • Flow sensor
  • System filter

Related codes

08

Your boiler has detected that there is not enough water inside the heating system to operate safely.

High DIY-safe £80-150 Community-sourced, unverified

What to check first

  1. Locate the external filling loop (a flexible silver hose) connecting your cold mains to the heating pipework.
  2. Open the filling valve slowly until you hear water entering the system and the pressure gauge on the front of the boiler rises to 1.5 bar.
  3. Close the valve tightly and check that the fault code has cleared.

Parts commonly replaced

  • Pressure sensor
  • Filling loop

Related codes

11

Your boiler has stopped heating your home because a sensor that measures the water temperature has disconnected or failed.

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 the system has shut down as a precaution to prevent overheating.

High Engineer only £120-200 Community-sourced, unverified

Parts commonly replaced

  • Central heating NTC thermistor

Related codes

18

Your boiler is struggling to stay lit and is repeatedly trying to restart itself, which will eventually lead to a complete lockout.

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

Parts commonly replaced

  • Ignition electrode
  • Gas valve
  • Flame rectification probe

Related codes

20

Your boiler's electronic control board is struggling to communicate with internal components due to a faulty electrical connection or damaged wiring.

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

Parts commonly replaced

  • Wiring harness
  • Main PCB
  • Sensor wiring loom

Related codes

23

Your boiler has detected that the internal air extraction system is not running fast enough to vent fumes safely, so it has turned itself off to prevent a risk.

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

Parts commonly replaced

  • Fan assembly
  • Printed circuit board (PCB)
  • Venturi/Air pressure tube

Related codes

24

Your boiler has detected an issue with the internal ventilation system, which prevents it from safely venting exhaust gases and means the unit will not start.

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 control panel is failing to talk to the main computer, which prevents the unit from starting safely.

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

Parts commonly replaced

  • Display interface PCB
  • Wiring harness
  • Main control PCB

Related codes

32

Your boiler's internal computer is struggling to talk to its main control board, which means the system has stopped working as a safety precaution.

High Engineer only £200-400 Community-sourced, unverified

Parts commonly replaced

  • Main PCB
  • Wiring harness
  • Display interface

Related codes