STANDBY Low

Ideal STANDBY Fault Code

The Ideal STANDBY fault code means: your boiler is currently switched off or in sleep mode and needs to be manually turned back on.. It appears on 2 Ideal models in our database.

Monitor it

This is a minor fault. Keep an eye on it and mention it at your next annual boiler service. Reset the boiler and see if it clears.

Technical description: Press [1/O] button

DIY fix possible

Locate the power button on the front control panel (often labelled 1/0)Press and release the button to exit standby modeWait a few moments for the boiler to complete its start-up sequence

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Ideal models that show the STANDBY fault code

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

Source

Ideal STANDBY 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