How much does it cost to fix Potterton error code 16 Per Sec?

Typical repair cost for the Potterton 16 Per Sec fault is £150-300 including labour.

16 Per Sec High

Potterton 16 Per Sec Fault Code

Q: What does the Potterton 16 Per Sec fault code mean?

Your boiler is attempting to ignite the gas repeatedly but is failing to establish a stable flame, meaning your heating and hot water will not work.

Also written as 16PERSEC — same fault.

The Potterton 16 Per Sec fault code means: your boiler is attempting to ignite the gas repeatedly but is failing to establish a stable flame, meaning your heating and hot water will not work.. It appears on 4 Potterton models in our database.

Technical description: Gas and Sparks ON

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 16 Per Sec fault code

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

Source

Potterton 16 Per Sec 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 27 April 2026