BoilerFaultCodesDaikin UA-67 Fault Code
Also written as UA67 — same fault.
The Daikin UA-67 fault code means: your boiler is unable to start because it cannot detect its internal memory chip, which contains the essential programming it needs to operate.. It appears on 1 Daikin model in our database.
Technical description: Boiler chip card (BCC) is missing
What causes the Daikin UA-67 fault?
This fault occurs when the boiler's control system loses its connection to the small memory chip that stores its identity and safety settings. The most common reason is that the chip has vibrated loose from its socket, or the internal circuitry on the main control board has failed and can no longer read the data.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
Find a Gas Safe engineer
Search the official register for a qualified engineer in your area.
Gas Safe Register →Daikin models that show the UA-67 fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Daikin UA-67 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