BoilerFaultCodesRemeha 8-9 Fault Code
Also written as 89 — same fault.
The Remeha 8-9 fault code means: your boiler is not receiving any electricity, which means the unit is completely shut down and cannot provide any heating or hot water.. It appears on 1 Remeha model in our database.
Technical description: No power supply
DIY fix possible
Check your home's fuse box or consumer unit to see if a trip switch has been triggered.Verify that the fused spur switch connected to the boiler is turned on.Check the fuse inside the boiler's fused spur and replace it if it has blown.
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Remeha models that show the 8-9 fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Remeha 8-9 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