Error 193 High

Potterton Error 193 Fault Code

Also written as ERROR193 — same fault.

The Potterton Error 193 fault code means: your boiler has detected air trapped in the pipes, which is preventing the water from circulating properly to heat your radiators or water.. It appears on 2 Potterton models in our database.

Call an engineer soon

Book a Gas Safe engineer within 24 to 48 hours. Your boiler may be unsafe or could break down completely if left.

Technical description: Primary circulation fault (Air in system)
Typical repair cost £120-250 (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 Error 193 fault code

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

Source

Potterton Error 193 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