How much does it cost to fix Saunier Duval error code 32?

Typical repair cost for the Saunier Duval 32 fault is £120-220 including labour.

32 High

Saunier Duval 32 Fault Code

Q: What does the Saunier Duval 32 fault code mean?

Your boiler has identified a faulty sensor that monitors the temperature of the water returning to the system, causing the unit to stop heating as a safety precaution.

The Saunier Duval 32 fault code means: your boiler has identified a faulty sensor that monitors the temperature of the water returning to the system, causing the unit to stop heating as a safety precaution.. It appears on 4 Saunier Duval models in our database.

Technical description: The heating return thermistor is short circuited.

Typical repair cost £120-220 (including labour)

Engineer required

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

Find a Gas Safe engineer

Search the official register for a qualified engineer in your area.

Gas Safe Register →

Saunier Duval models that show the 32 fault code

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

Source

Saunier Duval 32 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