How much does it cost to fix Atag error code 28?

Typical repair cost for the Atag 28 fault is £280-450 including labour.

28 High

Atag 28 Fault Code

Q: What does the Atag 28 fault code mean?

Your boiler has stopped working because the internal fan, which safely pushes exhaust gases out of your home, is not spinning or communicating with the main control board.

The Atag 28 fault code means: your boiler has stopped working because the internal fan, which safely pushes exhaust gases out of your home, is not spinning or communicating with the main control board.. It appears on 1 Atag model in our database.

Technical description: Fan speed error (no signal from fan)

Typical repair cost £280-450 (including labour)

Engineer required

This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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Atag models that show the 28 fault code

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

E Range Repair: £280-450

Source

Atag 28 fault code information on this page is sourced and cross-checked against the official Atag service / installation manuals for each affected model.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 27 April 2026