Power On Low

Ideal Power On Fault Code

Also written as POWERON — same fault.

The Ideal Power On fault code means: your boiler is receiving electrical power and is switched on, which is normal operating behavior.. It appears on 1 Ideal model 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: Power On lamp illuminates in switch when in the ON position.

DIY fix possible

Check that the main power switch is in the 'ON' positionEnsure your thermostat is calling for heat if you want the boiler to fire upVerify that the timer or programmer is set to an 'ON' period

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Ideal models that show the Power On fault code

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

Source

Ideal Power On 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