BoilerFaultCodesRemeha 14-15 Fault Code
Also written as 1415 — same fault.
The Remeha 14-15 fault code means: your boiler has detected that there is not enough water pressure in the system to operate safely, causing it to shut down.. It appears on 3 Remeha models in our database.
Technical description: Low water level
What causes the Remeha 14-15 fault?
This fault occurs when the internal sensors detect that the system's water pressure has dropped below the minimum level required for safe operation. The most common reason is a slow leak somewhere in your radiators or pipework, though it can also happen if you have recently bled your radiators without topping the pressure back up.
This issue often surfaces in autumn when homeowners turn their heating back on for the first time, as the change in temperature can highlight minor leaks or pressure loss during the summer.
DIY fix possible
Check the pressure gauge on the boiler or pipeworkLocate the external filling loop (braided silver hose)Slowly open the valves to top up the water until the pressure is between 1.0 and 1.5 barEnsure valves are closed tightly and reset the boiler
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Gas Safe Register →Remeha models that show the 14-15 fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Remeha 14-15 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