How much does it cost to fix Potterton error code 31?

Typical repair cost for the Potterton 31 fault is £150-300 including labour.

31 High

Potterton 31 Fault Code

Q: What does the Potterton 31 fault code mean?

Your boiler is currently struggling to detect the request for heating, meaning it is failing to ignite or sustain the warming of your home's radiators.

The Potterton 31 fault code means: your boiler is currently struggling to detect the request for heating, meaning it is failing to ignite or sustain the warming of your home's radiators.. It appears on 3 Potterton models in our database.

Technical description: Central Heating Mode

Typical repair cost £150-300 (including labour)

Engineer required

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

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Potterton models that show the 31 fault code

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

Source

Potterton 31 fault code information on this page is sourced and cross-checked against the official Potterton service / installation manuals for each affected model.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 7 July 2026