How much does it cost to fix Saunier Duval error code F13?

Typical repair cost for the Saunier Duval F13 fault is £180-450 including labour.

F13 High

Saunier Duval F13 Fault Code

Q: What does the Saunier Duval F13 fault code mean?

Your boiler's internal computer has lost communication with its electronic components and needs a professional reset or repair.

The Saunier Duval F13 fault code means: your boiler's internal computer has lost communication with its electronic components and needs a professional reset or repair.. It appears on 6 Saunier Duval models in our database.

Technical description: Main board connection fault. Main board defective. Check connection and wires

What causes the Saunier Duval F13 fault?

This fault occurs when the boiler's main control centre can no longer send or receive signals from its internal components, causing the system to freeze up for safety. The most common reason is a physical breakdown of the circuitry on the main board or a loose connection in the wiring that links the components together.

Typical repair cost £180-450 (including labour)

Engineer required

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

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Saunier Duval models that show the F13 fault code

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

Source

Saunier Duval F13 fault code information on this page is sourced and cross-checked against the official Saunier Duval service / installation manuals for each affected model.

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