How much does it cost to fix Potterton error code DRY-FIRE LOCKOUT?

Typical repair cost for the Potterton DRY-FIRE LOCKOUT fault is £150-300 including labour.

DRY-FIRE LOCKOUT High

Potterton DRY-FIRE LOCKOUT Fault Code

Q: What does the Potterton DRY-FIRE LOCKOUT fault code mean?

Your boiler is failing to light because it cannot confirm that water is flowing through the system or that the internal fan is operating correctly.

Also written as DRYFIRELOCKOUT — same fault.

The Potterton DRY-FIRE LOCKOUT fault code means: your boiler is failing to light because it cannot confirm that water is flowing through the system or that the internal fan is operating correctly.. It appears on 3 Potterton models in our database.

Technical description: Continuous prepurge or Lockout LED flashing 5 times a second

Typical repair cost £150-300 (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 DRY-FIRE LOCKOUT fault code

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

Source

Potterton DRY-FIRE LOCKOUT 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