How much does it cost to fix Potterton error code Below Minimum?

Typical repair cost for the Potterton Below Minimum fault is £80-150 including labour.

Below Minimum High

Potterton Below Minimum Fault Code

Q: What does the Potterton Below Minimum fault code mean?

Your boiler has stopped working because the water pressure inside the heating system has dropped too low.

Also written as BELOWMINIMUM — same fault.

The Potterton Below Minimum fault code means: your boiler has stopped working because the water pressure inside the heating system has dropped too low.. It appears on 1 Potterton model in our database.

Technical description: System pressure below minimum

Typical repair cost £80-150 (including labour)

DIY fix possible

Locate the filling loop, which is a silver braided hose under your boiler connecting two pipes.Open the valves on both ends of the hose to allow water into the system.Watch the pressure gauge on the front of the boiler until the needle reaches the green zone (typically 1.0 to 1.5 bar).Close both valves tightly and remove the hose if required.

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Potterton models that show the Below Minimum fault code

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

Performa 24 Eco HE Repair: £80-150

Source

Potterton Below Minimum 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