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 manualThe official installation and service manual (PDF), the document these fault codes were read from. 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.
15 High 2 Medium

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 for safety to prevent damage.

High Engineer only £120-250

Parts commonly replaced

  • NTC Temperature Sensor
  • Circulation Pump
  • Heat Exchanger

Related codes

03

Your boiler is failing to light the gas burner, which means it cannot provide heat or hot water.

High DIY-safe £100-£280

What to check first

  1. Check if other gas appliances in your home, like a hob, are working to confirm your gas supply is on.
  2. Ensure your gas meter has credit if you use a prepay meter.
  3. Press the 'Reset' button on the front control panel and wait for the boiler to restart.

Parts commonly replaced

  • Ignition Electrode
  • Flame Sensing Probe
  • Gas Valve

Related codes

05

Your boiler has stopped working because a sensor inside is detecting that the water is overheating or not circulating correctly.

High Engineer only £150-300

Parts commonly replaced

  • NTC Temperature Sensor
  • Circulating Pump
  • Main Heat Exchanger

Related codes

06

Your boiler has failed to ignite properly and has locked out for safety because it cannot detect a stable flame.

High Engineer only £150-300

Parts commonly replaced

  • Ignition electrode
  • Gas valve
  • Printed Circuit Board (PCB)

Related codes

07

Your boiler has stopped working because water is not moving around the internal system properly, causing it to shut down to prevent overheating.

High DIY-safe £150-£350

What to check first

  1. Check that the boiler pressure gauge is between 1 and 1.5 bar
  2. Ensure all radiator valves and isolation valves under the boiler are fully open
  3. Gently bleed your radiators to remove any trapped air pockets
  4. Reset the boiler using the 'R' or Reset button

Parts commonly replaced

  • Circulation Pump
  • Primary Heat Exchanger
  • Main PCB

Related codes

08

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

High DIY-safe £0-120

What to check first

  1. Locate the filling loop (usually a silver braided hose with small valves underneath the boiler).
  2. Open the valves slowly until you hear water flowing and the pressure gauge reaches between 1.0 and 1.5 bar.
  3. Close the valves tightly and restart the boiler.

Parts commonly replaced

  • Filling loop
  • Expansion vessel
  • Pressure sensor

Related codes

09

Your boiler's hot water sensor has failed, meaning it cannot accurately measure the temperature of the water going to your taps.

Medium Engineer only £90-160

Parts commonly replaced

  • DHW Thermistor (NTC sensor)
  • Wiring harness connectors

Related codes

10

Your boiler's hot water sensor has failed, meaning it cannot accurately measure or deliver hot water to your taps.

Medium Engineer only £90-160

Parts commonly replaced

  • DHW NTC Thermistor
  • Thermistor O-ring seal

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

Parts commonly replaced

  • Central Heating NTC Thermistor
  • Wiring harness

Related codes

12

Your boiler's internal thermometer for the heating system has stopped working, meaning the unit cannot safely tell how hot the water is and has shut down as a precaution.

High Engineer only £90-160

Parts commonly replaced

  • NTC Thermistor (Central Heating)
  • Thermistor wiring harness
18

Your boiler has detected an issue with the water circulation, which has caused it to temporarily stop working to protect itself.

High Engineer only £150-£350

Parts commonly replaced

  • Circulation pump
  • Automatic bypass valve
  • Flow sensor

Related codes

20

Your boiler has stopped working because of an internal electrical connection issue between its main control components.

High Engineer only £120-£350

Parts commonly replaced

  • Main PCB
  • Wiring Loom
23

Your boiler has stopped working because the internal fan is spinning too slowly to safely clear exhaust gases.

High Engineer only £180-350

Parts commonly replaced

  • Fan unit
  • Main circuit board (PCB)
  • Air pressure switch
24

Your boiler has detected a problem with the fan that safely removes exhaust gases, meaning the system has shut down to prevent safety issues.

High Engineer only £180-350

Parts commonly replaced

  • Fan Assembly
  • Main Control Board (PCB)
  • Wiring Harness

Related codes

29

Your boiler is stuck in heating mode, which means your radiators might stay hot even when you only want hot water, or you may find you have no hot water at all.

High Engineer only £180-320

Parts commonly replaced

  • Three-way valve motor
  • Complete Diverter Valve assembly
  • Valve cartridge
31

Your boiler's main control system is having trouble talking to the front display panel, meaning the boiler cannot receive the instructions it needs to provide heating and hot water.

High Engineer only £140-£280

Parts commonly replaced

  • Display PCB
  • Main Control PCB
  • Wiring Loom

Related codes

32

Your boiler's computer brains aren't talking to each other properly, causing the system to stop working for safety.

High Engineer only £250-450

Parts commonly replaced

  • Main PCB
  • Wiring Loom

Related codes