Remeha 01. Fault Code
Also written as 01 — same fault.
The Remeha 01. fault code means: your boiler has detected an electrical fault in its internal wiring, which has caused it to shut down to prevent further damage.. It appears on 3 Remeha models in our database.
Technical description: Short-circuit 24V. Check wiring.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
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Gas Safe Register →Remeha models that show the 01. fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Remeha 01. 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