Ideal Icos HE Fault codes & diagnostics

Your boiler has stopped working because the internal fan, which clears exhaust gases, is failing to spin or report that it is running correctly.

Your boiler has lost the ability to accurately measure the temperature of the water flowing through it, so it has safely shut down to prevent overheating.

Your boiler has detected an electrical fault in its flame-sensing mechanism, preventing it from safely lighting and staying on.

Your boiler has detected an issue with the sensor that monitors the temperature of the gases leaving your flue, causing it to shut down for safety.

Your boiler is failing to start because the electrical supply wires have been connected in the wrong order or there is a fault with the mains polarity.

Your boiler has failed to ignite or lost its flame and has shut down as a safety precaution.

Your boiler has become too hot and has shut itself down as a safety precaution to prevent damage.

Your boiler has detected an issue with the air pressure or water flow sensors, preventing it from firing up for safety.

Your boiler is having trouble venting exhaust gases safely, which prevents it from firing up to provide heating or hot water.

Your boiler has detected a problem with the internal sensor that monitors the temperature of the water for your radiators.

Your boiler is having trouble measuring the temperature of your hot water, likely meaning you won't have any hot water available.

Your boiler has shut down because it has detected that the exhaust gases are becoming dangerously hot, which usually suggests a serious internal blockage or a lack of water circulation.

Your boiler has stopped working because the waste water pipe is likely blocked or frozen, causing water to back up into the unit.

Your boiler has detected an internal error or has become too hot and has safely shut itself down as a precaution.

Your boiler's temperature sensor is providing faulty readings, causing the system to stop operating as a safety precaution.

Your boiler has detected an internal communication error, meaning it has shut down to prevent potential damage to its main control system.

Your boiler has detected that it is getting too hot and has automatically shut down to prevent any internal damage.

Your boiler's main computer control panel is experiencing a software or internal communication error and cannot operate the system.

Your boiler has detected an electrical fault involving the flame sensor, meaning it cannot safely confirm a flame is present and has turned itself off to stay safe.

Your boiler has entered a technician-only service menu and is no longer operating as normal.

Your boiler has detected that the electrical live and neutral wires are swapped, which commonly occurs following recent electrical work in your home or a change to the mains power supply.

Your boiler has detected that a critical internal sensor is malfunctioning, and as a safety precaution, it will not operate until this is resolved.

Your boiler has detected that the gases it is producing are significantly hotter than they should be, so it has shut itself down to prevent damage or overheating.

Your boiler has detected that the gases moving through your flue are getting dangerously hot, so it has automatically shut itself down to prevent damage.

Your boiler has stopped working because it cannot properly clear exhaust gases, which is a safety mechanism to prevent fumes from building up inside your home.

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

Your boiler's main control unit has identified a critical internal electronic failure and requires a professional inspection to determine if the computer board needs to be replaced.

Your boiler has failed to ignite the flame after three attempts, meaning it is currently unable to provide heating or hot water.