Low
Neon l3 on Ideal Classic NF30–NF80

Your boiler is receiving electrical power and is currently sitting in standby mode waiting for a command to heat up.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

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.

What the manual says

Manufacturer manual

Mains electricity ON

From this model's manual
Verified against the Ideal/Ideal Classic Nf30 Nf40 Nf50 Nf60 Nf70 Nf80 installation & service manual.
Plain-English guidance below. Severity, DIY steps, costs and parts are our interpretation to help you act, not text from the manual.

DIY fix possible

Check that your room thermostat is turned up high enough to trigger a heat demandEnsure your programmer or heating timer is set to 'ON'Check that the boiler temperature control knob is not turned to the 'OFF' position

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Related fault codes

Neon L1View →Neon L2View →

All 6 fault codes on the Classic NF30–NF80

Seeing a different code? Every code this model can display, in one place.

Neon I1Neon I2Neon I3Neon l1Neon l2

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