How much does it cost to fix Baxi error code H.02 – .02?

Typical repair cost for the Baxi H.02 – .02 fault is £100-£350 including labour.

H.02 – .02 High

Baxi H.02 – .02 Fault Code

Q: What does the Baxi H.02 – .02 fault code mean?

Your boiler's internal computer brain hasn't been set up with the correct identity settings, so it doesn't know how to operate correctly.

Also written as H0202 — same fault.

The Baxi H.02 – .02 fault code means: your boiler's internal computer brain hasn't been set up with the correct identity settings, so it doesn't know how to operate correctly.. It appears on 24 Baxi models in our database.

Technical description: Temporary error – no input of parameters C1/C2. Printed circuit board (PCB) not configured.

What causes the Baxi H.02 – .02 fault?

This fault occurs when the boiler's main control board has lost its specific identity settings or has recently been replaced without being programmed. It physically prevents the boiler from firing because the system doesn't know which model size or fan speed settings to apply, essentially leaving the appliance in a 'blank' factory state. This is usually caused by a memory failure on the circuit board or a missing configuration plug.

Typical repair cost £100-£350 (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 H.02 – .02 fault code

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

Source

Baxi H.02 – .02 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