BoilerFaultCodesRemeha 77 Fault Code
The Remeha 77 fault code means: your boiler is failing to detect the flame needed to heat your home, and it has exhausted all automatic attempts to restart itself.. It appears on 1 Remeha model in our database.
Technical description: Ionisation signal loss during operation (after 4 restarts during 1 heat demand)
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 77 fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Remeha 77 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