How much does it cost to fix Potterton error code E151?

Typical repair cost for the Potterton E151 fault is £250-450 including labour.

E151 High

Potterton E151 Fault Code

Q: What does the Potterton E151 fault code mean?

Your boiler's computer control board has developed a fault and can no longer communicate with the system components, causing the unit to shut down for safety.

The Potterton E151 fault code means: your boiler's computer control board has developed a fault and can no longer communicate with the system components, causing the unit to shut down for safety.. It appears on 5 Potterton models in our database.

Technical description: Printed circuit board (PCB) error

What causes the Potterton E151 fault?

This fault occurs when the boiler's internal computer experiences a software crash or a physical component failure on the control board. It is often caused by electrical surges, moisture ingress, or simply the natural degradation of the solder joints and capacitors over time. Because the board can no longer safely monitor the boiler's sensors, it shuts the system down as a precaution.

Typical repair cost £250-450 (including labour)

Engineer required

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

Find a Gas Safe engineer

Search the official register for a qualified engineer in your area.

Gas Safe Register →

Potterton models that show the E151 fault code

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

Source

Potterton E151 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