BoilerFaultCodes.com

Chaffoteaux Corvec 28 OF BF Fault Codes

Combi Natural Gas 28 kW Discontinued

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Most common fault codes

BURNER STAYS ON
Your boiler is failing to switch off even when it should, which means it will continue to run constantly and may overheat.
Gas Safe engineer required · £150-300
Complaints of noise
Your boiler is making unusual noises because of internal blockages or issues with how it regulates heat or water flow, which can put unnecessary strain on the system.
Gas Safe engineer required · £150-350
EXPLOSIVE IGNITION
Your boiler is struggling to light smoothly and is building up gas before catching, causing a small bang or flash when it starts.
Gas Safe engineer required · £120-250

All 25 fault codes

Code Severity Plain English
BURNER STAYS ON High Your boiler is failing to switch off even when it should, which means it will continue to run constantly and may overheat.
Complaints of noise High Your boiler is making unusual noises because of internal blockages or issues with how it regulates heat or water flow, which can put unnecessary strain on the system.
EXPLOSIVE IGNITION Emergency Your boiler is struggling to light smoothly and is building up gas before catching, causing a small bang or flash when it starts.
FAULT FINDING CHART High Your boiler is failing to detect the water flow required to trigger the heating process, meaning you are likely without hot water.
GAS TAP STIFF Emergency The control knob for your gas supply has become stuck or seized, making it difficult or impossible to safely turn the boiler on or off.
HEATER “SMELLS” FROM INSIDE BUILDING Emergency Your boiler's protective casing may not be sealed tight enough, which can allow gases or odors to escape into your home.
HEATER “SMELLS” FROM OUTSIDE BUILDING AT POINT OF TERMINATION Emergency Your boiler is struggling to burn gas cleanly and is exhausting fumes inefficiently outside, which could indicate a dangerous build-up of combustion gases.
HEATER SMELLS WHEN NEW Low Your new boiler is simply burning off residual manufacturing oils and protective coatings, which is completely normal and will stop after a short period of use.
HEATING BODY NOISE Medium Your boiler is making loud banging or kettling noises because internal mineral deposits have built up, restricting water flow and causing it to overheat.
HIGH WATER FLOW Medium Your boiler is struggling to correctly regulate the flow of water, which is causing it to stop operating properly.
INSUFFICIENT WATER FLOW High Your boiler is struggling to detect enough water flowing through it to safely start your hot water.
Main burner “lifts” Emergency Your boiler is struggling to breathe properly because it is recycling its own exhaust fumes, which means it cannot burn gas safely.
MAIN BURNER DOES NOT LIGHT High Your boiler is failing to ignite the flame needed to heat your water or home, which means the system has stopped working entirely.
MAIN BURNER DOES NOT LIGHT/MAIN BURNER High Your boiler is failing to ignite because it is not receiving enough gas or water flow to start the heating process safely.
Main burner will not light or lights at low rate High Your boiler is struggling to bring the heating or hot water on because it cannot detect a strong enough flow of water through the system to signal that it is safe to fire the burner.
PILOT FLAME DOES NOT LIGHT Emergency Your boiler is failing to ignite because it is not receiving a steady supply of gas to create the pilot flame needed to start the system.
Pilot goes out Emergency Your boiler is failing to stay lit, which means it cannot safely heat your home or provide hot water.
Pilot lights with taper but not with igniter High Your boiler is failing to light automatically because the physical spark mechanism isn't reaching the pilot flame, even though the gas is present.
Pilot will not light High Your boiler is failing to ignite because it cannot receive or properly process the gas needed to create a flame.
PILOT WILL NOT STAY ALIGHT Emergency Your boiler's pilot light is failing to remain lit, which prevents the main burner from igniting and means you currently have no heating or hot water.
POOR PILOT FLAME Emergency Your boiler's small starter flame is too weak to safely ignite the main burner, causing the system to shut down to prevent gas build-up.
UNSTABLE FLAMES Emergency Your boiler is struggling to keep the fire lit safely, which could prevent your heating or hot water from working consistently.
WATER TEMPERATURE LOW High Your boiler is struggling to heat the water to the right temperature because the water is flowing through the system too quickly or the gas supply isn't strong enough.
YELLOW FLAMES / SOOT FORMED Emergency Your boiler is not burning fuel cleanly, which means it is producing dangerous fumes that could lead to carbon monoxide buildup inside your home.
YELLOW FLAMES SOOT FORMED Emergency Your boiler is not burning fuel correctly, which is causing soot to build up and creating a serious risk of carbon monoxide production.

Chaffoteaux Corvec 28 OF BF 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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