BoilerFaultCodesGrant 36.0 Fault Code
Also written as 360 — same fault.
The Grant 36.0 fault code means: your boiler has detected a communication error between the main control board and the internal electronic components, preventing it from firing up.. It appears on 5 Grant models in our database.
Technical description: 36.0
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
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Grant models that show the 36.0 fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Grant 36.0 fault code information on this page is sourced and cross-checked against the official Grant service / installation manuals for each affected model.
Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 31 August 2026