How much does it cost to fix Keston error code E 32?

Typical repair cost for the Keston E 32 fault is £150-250 including labour.

E 32 High

Keston E 32 Fault Code

Q: What does the Keston E 32 fault code mean?

Your boiler has detected a faulty signal from a sensor that monitors the temperature of the water returning to the system, causing it to stop working for safety reasons.

Also written as E32 — same fault.

The Keston E 32 fault code means: your boiler has detected a faulty signal from a sensor that monitors the temperature of the water returning to the system, causing it to stop working for safety reasons.. It appears on 3 Keston models in our database.

Technical description: Return thermistor short circuit - check/replace connections/thermistor

Typical repair cost £150-250 (including labour)

Engineer required

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

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Keston models that show the E 32 fault code

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

Source

Keston E 32 fault code information on this page is sourced and cross-checked against the official Keston service / installation manuals for each affected model.

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