How much does it cost to fix Potterton error code Green LED OFF, Red LED ON?

Typical repair cost for the Potterton Green LED OFF, Red LED ON fault is £120-250 including labour.

Green LED OFF, Red LED ON High

Potterton Green LED OFF, Red LED ON Fault Code

Q: What does the Potterton Green LED OFF, Red LED ON fault code mean?

Your boiler is receiving power but has entered a lock-out state, meaning it has detected an internal issue and stopped working to keep your home safe.

Also written as GREENLEDOFFREDLEDON — same fault.

The Potterton Green LED OFF, Red LED ON fault code means: your boiler is receiving power but has entered a lock-out state, meaning it has detected an internal issue and stopped working to keep your home safe.. It appears on 2 Potterton models in our database.

Technical description: Mains ON Only

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 Green LED OFF, Red LED ON fault code

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

Source

Potterton Green LED OFF, Red LED ON 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