BoilerFaultCodes.com

Chaffoteaux Sterling FF Fault Codes

System Natural Gas 15-24 kW 1997-2005 Discontinued

Replaced by: Chaffoteaux Britony

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Most common fault codes

2
Your boiler is struggling to keep the flame lit steadily, so it has safely shut itself down to prevent any issues.
Gas Safe engineer required · £120-250
2a
Your boiler has stopped working because the amount of water inside the heating system has dropped too low.
May be DIY safe · £0-80
2b
Your boiler is making loud noises because the internal water pump is failing to move water around the system properly.
Gas Safe engineer required · £150-300

All 47 fault codes

Code Severity Plain English
1 Medium Your boiler is struggling to push water around your heating system, causing it to run noisily because the water flow is being restricted.
2 High Your boiler is struggling to keep the flame lit steadily, so it has safely shut itself down to prevent any issues.
2a High Your boiler has stopped working because the amount of water inside the heating system has dropped too low.
2b High Your boiler is making loud noises because the internal water pump is failing to move water around the system properly.
3 Medium Your boiler is struggling to circulate water properly because a debris filter is clogged, which is causing it to make loud, rattling noises.
4 Medium Your boiler is making loud noises because a part designed for gas appliances has been incorrectly installed on your water heating pipes, restricting the flow.
5 High Your boiler is unable to heat the water to the requested temperature, meaning you likely have no hot water available.
5.i High Your boiler is struggling to detect the flow of water correctly, meaning it is failing to heat your taps or shower effectively.
5.ii Medium Your boiler is struggling to detect the water flow because the mains water pressure coming into your home is currently too weak.
5.iii Medium Your boiler is struggling to provide hot water because the debris filter that cleans the water entering the system has become clogged, restricting the flow.
5.iv High Your boiler is struggling to heat your water properly because an internal component inside the flue system is not the correct size for your specific appliance.
5.v High Your boiler's hot water system is failing to regulate its temperature correctly, meaning the unit is unable to provide a consistent hot water supply.
5.vi High Your boiler is failing to switch on the internal valves required to provide hot water to your taps.
5.vii High Your boiler is struggling to detect the water flow needed to heat your taps, causing it to rapidly turn on and off while trying to start.
5.viii High Your boiler is struggling to work because it is not receiving enough gas from your supply mains.
6 Emergency Your boiler is receiving too much gas, causing it to run loudly and inefficiently, which could lead to unsafe combustion.
6.i High Your boiler has stopped heating because it is not detecting enough water moving through the system to operate safely.
6.ii High Your boiler has stopped working because the mechanical part responsible for moving water around the system is stuck and cannot spin.
6.iii High Your boiler has stopped working because it cannot detect enough water pressure inside the system to operate safely.
6.iv High Your boiler is failing to detect the water flow needed to start heating your home or providing hot water.
6.v High Your boiler has stopped heating your home's radiators because it is unable to accurately sense the current water temperature.
7 Medium Your boiler is making loud banging or whistling noises because the water supply valves under the unit haven't been turned fully on, restricting the flow.
7.i Emergency Your boiler has detected that the water pressure inside your heating system is too high, causing it to release water to prevent damage.
7.ii Emergency Your boiler is leaking water because the internal pressure relief valve is open, meaning your system is over-pressurised or unable to contain the water correctly.
7.iii High Your boiler has lost the air pressure needed to run smoothly, causing it to release excess water to prevent unsafe pressure levels within the system.
7.iv High Your boiler has developed an internal leak between its two water systems, causing the pressure to rise and trigger a safety release valve.
8 Medium Your boiler's water pump is struggling to circulate water properly, which is likely causing a rattling or grinding noise and preventing heat from flowing around your home.
8.i Medium Your boiler is struggling because there is trapped air inside the heating system, which is making the pump sound noisy and preventing water from circulating properly.
8.ii Medium Your boiler is struggling to circulate water because trapped air is causing the pump to run loudly and inefficiently.
8.iii Medium Your boiler's water pump is struggling to circulate water properly because it has become partially blocked or clogged.
8.iv Medium Your boiler is struggling to circulate water because the internal debris filter has become clogged, causing the pump to strain and make unusual noises.
9 High Your boiler is overheating because it cannot move the hot water away from the heating unit quickly enough, so it has shut itself down to prevent damage.
9.i High Your boiler is overheating because the internal filter that keeps the water moving is clogged with debris, preventing heat from being carried away properly.
9.ii High Your boiler is overheating because water is not flowing through it properly, which has caused it to automatically shut down as a safety precaution.
9.iii Emergency Your boiler is overheating because it is burning more gas than it can safely process, causing the internal system to shut down to prevent damage.
10 Medium Your boiler is struggling to maintain a steady temperature and is repeatedly turning its internal burner on and off to compensate.
10.i Medium Your boiler is struggling because it cannot pump enough water through the system, causing it to rapidly turn on and off to protect itself.
10.ii High Your boiler is struggling to maintain a steady temperature and is rapidly switching itself on and off as it confuses its internal safety readings.
10.iii Medium Your boiler is struggling to maintain a steady temperature, causing it to rapidly turn its burner on and off rather than running smoothly.
10.iv High Your boiler is struggling to move heat away from its internal workings, causing it to quickly turn on and off as it tries to protect itself from overheating.
11 High Your boiler has detected an internal electrical fault that is keeping the exhaust fan running constantly, preventing the heating and hot water from working.
12 High Your boiler has stopped working because the water pressure inside your heating system has dropped too low.
13 High Your boiler pressure is rising too high because water is leaking into the system when it shouldn't be, which could cause a leak or pipe burst.
Green Low There is no fault with your boiler; the green light simply confirms that it is powered on and operating normally.
Lock out radiator light High Your boiler has failed to light the gas flame and has safely shut itself down to prevent any risk.
Red High Your boiler has detected a fault and stopped working for safety reasons, meaning you currently have no heating or hot water.
Yellow Low Your boiler is operating normally and is currently running as expected.

Chaffoteaux Sterling FF is discontinued — time for a new one?

Parts for discontinued models can be hard to find and expensive. A new A-rated boiler could save you money on both repairs and energy bills.

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