How much does it cost to fix Potterton error code Shorted signal?

Typical repair cost for the Potterton Shorted signal fault is £120-250 including labour.

Shorted signal High

Potterton Shorted signal Fault Code

Q: What does the Potterton Shorted signal fault code mean?

Your boiler has detected an electrical fault with the sensor that detects the flame, causing it to shut down for safety reasons.

Also written as SHORTEDSIGNAL — same fault.

The Potterton Shorted signal fault code means: your boiler has detected an electrical fault with the sensor that detects the flame, causing it to shut down for safety reasons.. It appears on 1 Potterton model in our database.

Technical description: Flame signal shorted to ground Check igniter etc

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 Shorted signal fault code

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

Envoy 30 Repair: £120-250

Source

Potterton Shorted signal 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