BoilerFaultCodesAlpha 0E13 Fault Code
The Alpha 0E13 fault code means: your boiler has locked itself for safety after too many unsuccessful restart attempts in a short period of time.. It appears on 3 Alpha models in our database.
Technical description: Maximum number of resets reached. More than five reset attempts have been reached within 15 minutes.
What causes the Alpha 0E13 fault?
This fault occurs when the boiler's safety software detects too many manual reset attempts in a 15-minute window and enters a protective lockout. It is usually triggered because an underlying issue caused the boiler to fail initially, leading the user to repeatedly press the reset button. The boiler essentially stops responding to prevent potential damage or further safety risks from constant restarting.
DIY fix possible
Turn the boiler power off at the fused spur switch (the wall switch).Wait for at least 15 to 30 minutes to allow the internal timer to clear.Turn the power back on and see if the fault has cleared, but do not press reset again if a different fault code appears.
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Gas Safe Register →Alpha models that show the 0E13 fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Alpha 0E13 fault code information on this page is sourced and cross-checked against the official Alpha service / installation manuals for each affected model.
Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 27 April 2026