BoilerFaultCodesIdeal BLANK DISPLAY Fault Code
Also written as BLANKDISPLAY — same fault.
The Ideal BLANK DISPLAY fault code means: your boiler has no power or the screen has failed, meaning it cannot provide heating or hot water until the electrical supply is restored.. It appears on 6 Ideal models in our database.
Technical description: Blank Display
What causes the Ideal BLANK DISPLAY fault?
This fault occurs when the boiler's internal computer is not receiving electricity or has suffered a hardware failure. The most common reason is a blown fuse on the control board or a tripped circuit breaker, though it can also be caused by a complete failure of the Printed Circuit Board (PCB) itself. Without a functional display, the boiler is unable to process any commands to provide heat or hot water.
This issue often occurs after summer periods when a power surge during a storm or a damp environment has affected the electronics before the first cold snap.
DIY fix possible
Check if other appliances are working to ensure there isn't a general power cut.Inspect your main consumer unit (fuse box) to see if a circuit breaker has tripped.Locate the boiler's fused spur (a wall switch with a fuse) and ensure it is switched on.Try replacing the 3-amp fuse in the boiler's wall switch/spur with a new one.
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Gas Safe Register →Ideal models that show the BLANK DISPLAY fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Ideal BLANK DISPLAY 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