17 High

Atag 17 Fault Code

The Atag 17 fault code means: your boiler has encountered a computer or communication error within its main control board, preventing it from running safely.. It appears on 1 Atag model in our database.

Call an engineer soon

Book a Gas Safe engineer within 24 to 48 hours. Your boiler may be unsafe or could break down completely if left.

Technical description: Internal error
Typical repair cost £250-450 (including labour)

DIY fix possible

Switch the boiler off at the fused spur switch or main power supply.Wait for 30 seconds.Switch the power back on and press the 'Reset' button on the control panel.

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Atag models that show the 17 fault code

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

Source

Atag 17 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