Chaffoteaux Centora Green 30 Fault codes & diagnostics

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

Combi Natural Gas 30 kW 2002-2007 Discontinued
GC Number 47-980-24
Download the Chaffoteaux Centora Green 30 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
47-980-24 Centora Green 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 17 documented codes

Tap any card for details

01

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

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 produce heat or hot water.

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

Parts commonly replaced

  • Ignition electrode
  • Gas valve
  • PCB

Related codes

05

Your boiler is currently running its built-in safety mode to prevent the internal water pipes from freezing, which is a normal protective feature during very cold weather.

Low Engineer only Community-sourced, unverified

Parts commonly replaced

  • NTC Temperature sensor
  • PCB

Related codes

06

Your boiler is currently protecting its internal components from freezing by running the pump and heater, which is a normal safety feature during very cold weather.

Low Engineer only Community-sourced, unverified

Parts commonly replaced

  • NTC sensor
  • PCB

Related codes

07

Your boiler has detected that water is not moving around your heating system properly, meaning it cannot safely generate heat or hot water.

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

Parts commonly replaced

  • Circulation pump
  • Flow switch
  • Diverter valve

Related codes

08

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

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

What to check first

  1. Locate the filling loop (a silver flexible hose) connected to the underside of the boiler.
  2. Open the valves on the filling loop to allow water into the system.
  3. Watch the pressure gauge on the front of the boiler until the needle reaches the green zone (typically 1.0 to 1.5 bar).
  4. Close both valves firmly and ensure the boiler resets.

Parts commonly replaced

  • Filling loop
  • Pressure relief valve
  • Pressure sensor

Related codes

09

Your boiler has lost the ability to measure the temperature of the hot water it provides, so it has shut down the tap water function to prevent overheating.

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

Parts commonly replaced

  • Domestic Hot Water NTC Thermistor
  • Wiring harness

Related codes

10

Your boiler has lost the ability to monitor the temperature of your hot water, so it has safely shut down to prevent overheating.

High Engineer only £120-180 Community-sourced, unverified

Parts commonly replaced

  • DHW NTC Thermistor

Related codes

11

Your boiler has lost the ability to read the water temperature, so it has safely shut down to prevent overheating.

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

Parts commonly replaced

  • Central Heating NTC Thermistor
  • Wiring harness

Related codes

12

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

18

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

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

Parts commonly replaced

  • Ignition electrode
  • Gas valve
  • Printed circuit board

Related codes

20

Your boiler has detected a loose or faulty electrical connection which is preventing it from communicating with its internal controls.

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

Parts commonly replaced

  • Wiring harness
  • Main PCB
  • Connector block

Related codes

23

Your boiler is struggling to push air through its system, so it has safely shut itself down to prevent it from running incorrectly.

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

Parts commonly replaced

  • Fan assembly
  • Air pressure switch
  • Venturi
  • Printed Circuit Board (PCB)

Related codes

24

Your boiler has detected an issue with the internal fan that pushes exhaust gases out of your home, so it has safely shut itself down to prevent operation.

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 heating your hot water because a small internal valve is stuck.

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

Parts commonly replaced

  • Diverter valve cartridge
  • Diverter valve motor

Related codes

31

Your boiler's main internal computer and the front control display are having trouble talking to each other, preventing the system from operating correctly.

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

Parts commonly replaced

  • Interface PCB
  • Main Control PCB
  • Wiring loom

Related codes

32

Your boiler's internal computer is unable to communicate with its control panel, meaning the unit cannot receive instructions to provide heating or hot water.

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

Parts commonly replaced

  • Main PCB
  • Wiring harness
  • Interface board

Related codes