How much does it cost to fix Main error code E17?

Typical repair cost for the Main E17 fault is £120-250 including labour.

E17 High

Main E17 Fault Code

Q: What does the Main E17 fault code mean?

Your boiler has attempted to light the flame but has failed to stay on, so it has shut itself down for safety.

The Main E17 fault code means: your boiler has attempted to light the flame but has failed to stay on, so it has shut itself down for safety.. It appears on 1 Main model in our database.

Technical description: Flame failure

Typical repair cost £120-250 (including labour)

Engineer required

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

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Main models that show the E17 fault code

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

Insul 7 Repair: £120-250

Source

Main E17 fault code information on this page is sourced and cross-checked against the official Main service / installation manuals for each affected model.

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