How much does it cost to fix Baxi error code Second orange light?

Typical repair cost for the Baxi Second orange light fault is £90-210 including labour.

Second orange light High

Baxi Second orange light Fault Code

Q: What does the Baxi Second orange light fault code mean?

Your back boiler is receiving two different electrical power signals at the same time, which is causing a control conflict and preventing it from running properly.

Also written as SECONDORANGELIGHT — same fault.

The Baxi Second orange light fault code means: your back boiler is receiving two different electrical power signals at the same time, which is causing a control conflict and preventing it from running properly.. It appears on 2 Baxi models in our database.

Technical description: Permanent live & switched live supplied

Typical repair cost £90-210 (including labour)

Engineer required

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

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Baxi models that show the Second orange light fault code

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

Source

Baxi Second orange light fault code information on this page is sourced and cross-checked against the official Baxi service / installation manuals for each affected model.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 27 April 2026