Ariston Clas HE Evo Fault codes & diagnostics

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

Your boiler is struggling to detect the water pressure inside the system because the sensor that monitors it is faulty or blocked.

Your boiler is struggling to move water through the system, usually because there is trapped air, a closed valve, or a blockage preventing proper flow.

Your boiler is struggling to move water around your heating system effectively, so it has turned itself off to prevent overheating.

Your boiler is struggling to move enough water through your heating system, so it has shut down to prevent overheating.

Your boiler has detected that hot water is not moving around your heating system effectively, causing it to shut down to prevent overheating.

Your boiler has detected that water is not flowing properly around your heating system, so it has safely shut down to prevent overheating.

Your boiler has lost the ability to measure the temperature of the water being sent to your radiators, so it has shut down as a precaution to prevent overheating.

Your boiler's temperature sensor is failing to communicate, which has caused the system to stop heating for your safety.

Your boiler is struggling to accurately measure the temperature of the water being sent to your radiators, so it has stopped working as a safety precaution.

Your boiler is struggling to move water around your heating system correctly, which is causing it to stop to prevent overheating.

Your boiler has detected that hot water is not flowing around your radiators effectively, causing it to shut down to prevent overheating.

Your boiler is struggling to move water around your heating system effectively, so it has shut down to prevent itself from overheating.

Your boiler's internal computer is experiencing a memory error, preventing it from starting up or operating correctly.

Your boiler has lost the digital connection between its main control board and the display panel, meaning it cannot process instructions or provide heat.

Your boiler's internal computer is experiencing a communication fault, preventing it from safely starting or controlling the heating process.

Your boiler's electronic brain is experiencing an internal communication error and has safely shut itself down to prevent potential damage.

Your boiler's internal computer is experiencing a communication error and has shut down for safety, meaning you currently have no heating or hot water.

Your boiler's internal computer is experiencing a communication error and has shut down to prevent potential damage.

Your boiler is struggling to read the temperature from the wall-mounted thermostat, so it has stopped heating to prevent it from getting stuck on.

Your boiler is trying to start, but it cannot detect a flame, so it has safely shut down to prevent gas from building up.

Your boiler is struggling to keep the flame ignited correctly because the fuel mixture is not burning steadily.

Your boiler is struggling to start up because it cannot safely ignite the gas flame on its first attempt.

Your boiler has failed to light the gas flame after two attempts and has locked itself out to prevent a gas build-up.

Your boiler has detected that the flame intended to heat your water has gone out unexpectedly while the burner is running.

Your boiler has stopped working because the mechanical fan that pushes stale air out of the flue is not spinning fast enough to run safely.

Your boiler has detected a safety failure in the internal wiring or temperature control circuit and has shut down to prevent damage.

Your boiler has detected that the internal fan responsible for clearing exhaust gases is not spinning or reporting its speed correctly, so it has shut down for safety.

Your boiler is struggling to accurately measure the water flow between your heating system and your hot water tank, which is stopping it from working properly.

Your boiler has detected that the water temperature in one part of your home heating system is higher than it should be and has shut down to stay safe.

Your boiler has detected that the water pressure inside the system has dropped too low to operate safely.