BoilerFaultCodesRemeha 0 0. Fault Code
Also written as 00 — same fault.
The Remeha 0 0. fault code means: your boiler has detected a flame signal when it shouldn't be there, which has caused it to shut down for safety purposes.. It appears on 3 Remeha models in our database.
Technical description: Flame simulation: Check ionisation probe (distance 3 - 4 mm).
What causes the Remeha 0 0. fault?
This fault occurs when the boiler's internal sensor detects a flame signal at a time when the burner should be completely off. The most common reason is a faulty or contaminated sensing probe that is sending an incorrect electrical signal to the main control board, though it can also be caused by moisture on the internal electronics. For safety, the boiler will immediately shut down to ensure that gas is not flowing when it shouldn't be.
This fault is more frequent during periods of high humidity or heavy rain, as internal dampness or moisture ingress can cause the sensitive electronics to misread electrical signals.
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 0 0. fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Remeha 0 0. 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