56 fault codes with plain-English explanations, severity ratings, DIY guidance, and repair cost estimates.
Replaced by: Biasi Riva Plus
This boiler uses LED flash patterns
Count the flashes in one repeating group before the pause. That number is your fault code. Do not reset until you have noted it. How to read fault codes →
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Your boiler is operating normally and performing a routine check to ensure everything is working correctly.
Your boiler has detected low water pressure or a circulation issue, preventing it from heating up to protect the system.
Your boiler has detected a problem with the sensor that monitors hot water temperature, which means your taps may not get warm.
Your boiler has detected a problem with the internal temperature sensor that monitors the heating water, preventing the unit from operating correctly.
Your boiler has detected that the exhaust gases are getting too hot or the sensor monitoring them has failed, causing the system to shut down for safety.
Your boiler is operating normally and is currently responding to a demand for heating or hot water.
Your boiler has detected that the water temperature has risen too high, causing it to shut down for safety.
Your boiler has detected that the water inside is getting too hot and has shut down as a safety precaution.
Your boiler is currently on standby and is performing its normal automatic safety check to prevent the internal pipes from freezing.
Your boiler has no power and is completely unresponsive, meaning it cannot provide any heating or hot water.
Your boiler is currently running in central heating mode and this light is a normal status indicator rather than a fault.
Your boiler is currently providing hot water but ignoring heating demands, or it may have a sensor glitch causing it to stay in hot water mode.
Your boiler has detected that water isn't moving through the system properly, which has caused it to shut down to prevent overheating.
Your boiler has detected that water isn't moving through the system properly, meaning it won't fire up to provide heating or hot water until the internal pressure sensor is triggered.
Your boiler has failed to ignite, which means it cannot provide heat or hot water and requires a safety reset.
Your boiler has detected a problem with the internal part that heats your water, often caused by a blockage or a faulty sensor, meaning you will likely have no hot water.
Your boiler is failing to heat your tap water correctly because the internal heat exchanger is likely blocked or faulty.
Your boiler has shut down because a safety component has detected an internal pressure issue, likely caused by a communication error or a faulty sensor.
Your boiler is not detecting when you turn on a hot tap, so it isn't starting up to provide hot water.
Your boiler is having trouble switching between heating your radiators and providing hot water because of an electrical fault with an internal valve.
Your boiler has become too hot and has shut itself down as a safety precaution to prevent damage.
Your boiler is struggling to manage the internal pressure changes as the water heats up, which is causing the system to shut down.
Your boiler is failing to detect the flame needed to heat your water and radiators, causing the system to shut down for safety.
Your boiler is failing to light the gas properly because the component responsible for creating the starting spark is faulty or worn out.
Your boiler is struggling to light the burner because the part responsible for creating the internal spark is failing or dirty.
Your boiler is unable to safely control the flow of gas required to light the burner, meaning your heating and hot water will not work.
Your boiler is failing to light the gas burner correctly to provide heating and hot water.
Your boiler has detected an internal insulation issue or a heat-related fault that requires a professional safety inspection of the main central heating components.
Your boiler has detected a potential structural issue or heat damage within the internal combustion chamber, causing it to shut down for safety.
Your boiler has detected a physical issue or insulation failure within the main combustion chamber, which is preventing it from heating safely.
Your boiler has detected a potential safety issue or an internal communication error involving the front panel of the combustion area.
Your boiler has detected a potential safety issue with the seal or position of the main burner cover, which is preventing it from firing safely.
Your boiler has stopped working because it has detected a specific internal electrical fault or a sensor communication error that requires a manual reset.
Your boiler has likely detected a circulation or temperature issue that has caused it to lock out for safety.
Your boiler has detected an internal communication failure between the control board and the display, meaning it cannot process commands correctly.
Your boiler has failed to light the flame or has lost its flame during operation, causing it to shut down for safety.
Your boiler has likely overheated, causing its safety system to shut it down to prevent damage.
Your boiler has detected a problem with how it is venting waste gases, causing it to shut down for safety.
Your boiler has detected low water pressure in the system, which is preventing it from firing up to provide heat or hot water.
Your boiler is unable to start up or heat your water because the internal fan that clears away exhaust gases isn't spinning.
Your boiler's fan is running, but the system is failing to spark the burner, meaning you will have no heating or hot water until it is repaired.
Your boiler has stopped working because it cannot confirm that the fan is safely clearing waste gases from the system.
Your boiler has lost water pressure or the water isn't moving through the system properly, which has triggered a safety shutdown to prevent overheating.
Your boiler has sensed very cold temperatures and is running its internal pump or burner to prevent its pipes from freezing.
Your boiler is failing to light the gas flame required to heat your water and radiators.
Your boiler has failed to light the gas or cannot detect the flame once it has started.
Your boiler has likely overheated or sensed an internal temperature error, causing it to stop running for safety.
Your boiler has stopped working and locked itself for safety because it failed to light or stay lit.
Your boiler has stopped working because it failed to light or detected a safety issue, causing it to shut down for protection.
Your boiler has failed to ignite after several attempts, meaning it cannot produce heat or hot water.
Your boiler is failing to start up for central heating even though no warning lights are showing, meaning the ignition sequence is failing at various stages.
Your boiler is failing to detect the flame after lighting, causing it to shut down for safety purposes even though the gas is ignited.
Your boiler has failed to light the burner after several attempts and has shut down as a safety precaution.
Your boiler has detected that the water pressure is too low, which is preventing it from firing up to keep you safe.
Your boiler is currently working as it should and is simply communicating that it is in normal operating mode for the season you have selected.
Your boiler has shut down because it reached an internal temperature that is too high, often caused by a circulation issue or a lack of water flow.
BoilerFaultCodes