How much does it cost to fix Potterton error code Wiring fault?

Typical repair cost for the Potterton Wiring fault fault is £90-180 including labour.

Wiring fault Emergency

Potterton Wiring fault Fault Code

Q: What does the Potterton Wiring fault fault code mean?

Your boiler has detected an electrical wiring error where the power wires appear to be connected incorrectly, which is a significant safety risk.

Also written as WIRINGFAULT — same fault.

The Potterton Wiring fault fault code means: your boiler has detected an electrical wiring error where the power wires appear to be connected incorrectly, which is a significant safety risk.. It appears on 1 Potterton model in our database.

Technical description: Live on neutral connection Correct fault

What causes the Potterton Wiring fault fault?

This fault occurs when the boiler detects that the electrical supply wires are reversed, meaning the 'live' and 'neutral' power lines are connected to the wrong terminals. The most common reason is recent electrical work elsewhere in the property or a failing main control board that can no longer correctly identify the incoming power signal.

Typical repair cost £90-180 (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 Wiring fault fault code

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

Envoy 30 Repair: £90-180

Source

Potterton Wiring fault 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