<00 High

Remeha <00 Fault Code

Also written as 00 — same fault.

The Remeha <00 fault code means: your boiler is struggling to detect or control the speed of the internal fan required to safely vent exhaust gases, so it has stopped operating to protect your home.. It appears on 5 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: Fan speed mode
Typical repair cost £250-450 (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 <00 fault code

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

Source

Remeha <00 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