Low
105 on Atag iC Range

Your boiler is simply running a routine automatic cycle to clear air bubbles from the pipes because the power was recently switched off or interrupted.

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

Venting program active when power turned on or interrupted

Shared across the iC Range range
This code is shared by the boilers in this range, which use the same control board. It may not be printed in this exact variant’s 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

Wait approximately 7 minutes for the automated venting cycle to complete.Ensure all radiator valves are fully open to help air move through the system.Check that your home has not had a recent power cut or that the boiler wasn't accidentally switched off.

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Related fault codes

106View →111View →

All 33 fault codes on the iC Range

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

1P4102040506178101102104108109110111112114117118119129133140151154180181201203303304501612

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