BoilerFaultCodesDaikin 10-65 Fault Code
Also written as 1065 — same fault.
The Daikin 10-65 fault code means: your boiler has detected an electrical issue with the gas control system and has shut down as a safety precaution.. It appears on 1 Daikin model in our database.
Technical description: Gas valve current fault, try resetting the boiler
What causes the Daikin 10-65 fault?
This fault occurs when the boiler's main computer loses the ability to correctly control the electrical signal sent to the gas valve. The most common reason is a physical failure of the internal solenoids within the gas valve or a communication break in the wiring connecting it to the control board. For safety reasons, the boiler immediately stops ignition because it can no longer guarantee the precise regulation of gas flow.
DIY fix possible
Locate the reset button on the boiler control panelPress and hold the reset button for 2-3 secondsWait for the boiler to attempt to restartIf the code persists, contact a Gas Safe registered engineer
Find a Gas Safe engineer
Search the official register for a qualified engineer in your area.
Gas Safe Register →Daikin models that show the 10-65 fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Daikin 10-65 fault code information on this page is sourced and cross-checked against the official Daikin service / installation manuals for each affected model.
Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 27 April 2026