Remeha H01.15 Fault Code
Also written as H0115 — same fault.
The Remeha H01.15 fault code means: your boiler has detected that the exhaust gases leaving the system are too hot, so it has safely shut itself down to prevent damage.. It appears on 1 Remeha model in our database.
Technical description: Max Tflue Gas
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 H01.15 fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Remeha H01.15 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 7 July 2026