BoilerFaultCodesIdeal Fault indication light (2) Fault Code
Also written as FAULTINDICATIONLIGHT2 — same fault.
The Ideal Fault indication light (2) fault code means: your boiler has detected an internal error or has become too hot and has safely shut itself down as a precaution.. It appears on 1 Ideal model in our database.
Technical description: If the red fault indication light is illuminated, it indicates a fault or overheat condition requiring a reset procedure.
What causes the Ideal Fault indication light (2) fault?
This fault occurs when the boiler's internal safety sensors detect that the water temperature has exceeded safe limits or if a component has failed. The most common reasons include a blockage in the system, a pump failure that prevents water from moving, or a build-up of limescale within the heat exchanger. Because the unit cannot safely cool itself down, it shuts off to prevent damage to the internal parts.
DIY fix possible
Locate the reset knob on the front control panel.Turn the knob to the 'RESET' position and hold it for 2 seconds.Return the knob to its original setting and wait for the boiler to restart.
Find a Gas Safe engineer
Search the official register for a qualified engineer in your area.
Gas Safe Register →Ideal models that show the Fault indication light (2) fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Ideal Fault indication light (2) fault code information on this page is sourced and cross-checked against the official Ideal service / installation manuals for each affected model.
Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 27 April 2026