Chaffoteaux Centora Green 24 Fault codes & diagnostics

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

Combi Natural Gas 24 kW 2002-2007 Discontinued
GC Number 47-980-21

Replaced by: Chaffoteaux PIGMA

Download the Chaffoteaux Centora Green 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.
15 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
47-980-21 Centora Green 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 17 documented codes

Tap any card for details

01

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

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

Parts commonly replaced

  • Circulation pump
  • NTC thermistor sensor
  • Primary heat exchanger
  • Diverter valve

Related codes

03

Your boiler is failing to ignite because it cannot detect a flame, meaning you currently have no heating or hot water.

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

Parts commonly replaced

  • Ionisation electrode
  • Ignition lead
  • Gas valve
  • PCB

Related codes

05

Your boiler is currently running its pump to prevent the internal water from freezing in cold temperatures, which is a normal safety function.

Low Engineer only Community-sourced, unverified

Parts commonly replaced

  • NTC Thermistor
  • PCB

Related codes

06

Your boiler has automatically activated its built-in protection system to prevent your internal pipes from freezing during cold weather.

Low DIY-safe Community-sourced, unverified

What to check first

  1. Ensure your thermostat is set to a reasonable temperature to keep the system active
  2. Check that your boiler is not located in a room that has become excessively cold or unheated
  3. Wait for the temperature to rise, at which point the code should disappear automatically

Related codes

07

Your boiler has detected that water is not moving through the system properly, which is preventing it from heating your home safely.

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

Parts commonly replaced

  • Central heating pump
  • Diverter valve
  • System filter

Related codes

08

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

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

What to check first

  1. Locate the filling loop (a flexible metal hose) underneath the boiler.
  2. Open the valves on both ends of the loop to allow water to enter the system.
  3. Monitor the pressure gauge on the front panel until the needle reaches the green zone (typically 1.5 bar).
  4. Close both valves tightly and remove the loop if required.

Parts commonly replaced

  • Filling loop
  • Pressure relief valve
  • Expansion vessel

Related codes

09

Your boiler has lost the ability to tell how hot your tap water is, so it has safely stopped heating it to prevent overheating.

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

Parts commonly replaced

  • DHW NTC Sensor
  • Wiring harness

Related codes

10

Your boiler is currently unable to sense the temperature of your hot water properly, which means it has stopped heating it to prevent the system from overheating.

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

Parts commonly replaced

  • Domestic Hot Water (DHW) NTC Thermistor

Related codes

11

Your boiler has lost the ability to measure the temperature of the water being sent to your radiators, so it has shut down to prevent overheating.

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

Parts commonly replaced

  • Central Heating NTC Thermistor
  • Wiring Harness

Related codes

12

Your boiler's temperature sensor is disconnected or broken, so the system has stopped heating your home because it cannot accurately measure the water temperature.

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

Parts commonly replaced

  • Central Heating NTC Thermistor
  • Wiring harness

Related codes

18

Your boiler is struggling to ignite the flame it needs to heat your home and is currently trying to restart itself.

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

Parts commonly replaced

  • Ignition electrode
  • Gas valve
  • PCB

Related codes

20

Your boiler's internal computer is unable to communicate with its sensors due to a faulty electrical connection or damaged wiring.

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

Parts commonly replaced

  • Wiring harness
  • Main printed circuit board (PCB)

Related codes

23

Your boiler has detected that the internal fan responsible for clearing exhaust gases is not spinning fast enough, so it has safely shut itself down to prevent any risk.

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

Parts commonly replaced

  • Fan assembly
  • Printed Circuit Board (PCB)
  • Venturi/flue seal

Related codes

24

Your boiler is unable to safely vent exhaust gases because it cannot control the internal fan, so it has shut itself down to prevent a safety hazard.

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

Parts commonly replaced

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

Related codes

29

Your boiler is struggling to switch between heating your radiators and providing hot water to your taps because an internal valve is stuck.

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

Parts commonly replaced

  • Three-way diverter valve
  • Diverter valve motor

Related codes

31

Your boiler's control screen is struggling to talk to the main computer, which prevents the system from starting up or operating correctly.

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 failing to send signals to the main control board, which prevents the unit from starting or operating.

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

Parts commonly replaced

  • Main PCB
  • Wiring harness

Related codes