BoilerFaultCodesRemeha E36 Fault Code
The Remeha E36 fault code means: your boiler is correctly sensing a flame when it expects the burner to be extinguished, which is typically caused by a faulty internal sensor or a gas valve that isn't closing properly.. It appears on 7 Remeha models in our database.
Technical description: Flame signal present while burner should be off: check gas valve and ionisation probe.
What causes the Remeha E36 fault?
This fault occurs when the boiler’s control system detects a flame inside the unit even though it has commanded the heating to stop. The most common reason is a gas valve that is stuck open and leaking fuel into the burner, or a faulty internal sensor that is incorrectly reporting a flame signal. Because the boiler cannot safely extinguish the heat, it shuts down entirely to prevent overheating or gas build-up.
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 E36 fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Remeha E36 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