BoilerFaultCodesRemeha 12-13 Fault Code
Also written as 1213 — same fault.
The Remeha 12-13 fault code means: your boiler is failing to light or keep a flame going, which means your heating and hot water have stopped working.. It appears on 3 Remeha models in our database.
Technical description: Burner failure
What causes the Remeha 12-13 fault?
This fault occurs when the boiler's control system attempts to start the burner but fails to detect a stable flame. The most common reasons are worn-out ignition components that can't create a spark or a faulty sensor that cannot 'see' the flame even if it is actually lit.
DIY fix possible
Check if other gas appliances in your home, like a hob, are working to ensure gas supply is active.Check that your prepaid gas meter has credit, if applicable.Press the reset button on the control panel to see if the boiler restarts.
Find a Gas Safe engineer
Search the official register for a qualified engineer in your area.
Gas Safe Register →Remeha models that show the 12-13 fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Remeha 12-13 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