NO DISPLAY High

Ideal NO DISPLAY Fault Code

Also written as NODISPLAY — same fault.

The Ideal NO DISPLAY fault code means: your boiler has completely lost power and the screen is blank, meaning it is currently turned off or not receiving electricity.. It appears on 4 Ideal models in our database.

Call an engineer soon

Book a Gas Safe engineer within 24 to 48 hours. Your boiler may be unsafe or could break down completely if left.

Technical description: GO TO SECTION 4.12
Typical repair cost £90-250 (including labour)

DIY fix possible

Check that the fused spur switch supplying the boiler is turned on.Check your home's main fuse box (consumer unit) to see if a trip switch has turned off.Check the internal fuse located within the boiler's connection unit.

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Ideal models that show the NO DISPLAY fault code

Click a model for the full fault code list and model-specific repair notes.

Source

Ideal NO 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 31 August 2026