02. High

Remeha 02. Fault Code

Also written as 02 — same fault.

The Remeha 02. fault code means: your boiler is failing to light properly or cannot detect that a flame has started, resulting in a safety shutdown to prevent unburnt gas from building up.. It appears on 3 Remeha models in our database.

Call an engineer soon

Book a Gas Safe engineer within 24 to 48 hours. Your boiler may be unsafe or could break down completely if left.

Technical description: No flame or no ionisation (after 3 starts). a. no ignition spark (check connection of ignition cable, spark plug cap, electrode for breakdown, and distance 3-4 mm). b. ignition spark, but no flame (check gas cock, gas pressure, gas pipe venting, gas valve, and gas/air ratio). c. flame, but no ionisation.
Typical repair cost £120-£350 (including labour)

Engineer required

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

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Remeha models that show the 02. fault code

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

Source

Remeha 02. fault code information on this page is sourced and cross-checked against the official Remeha service / installation manuals for each affected model.

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