Daikin fault codes
58 documented codes for Daikin mini-splits, each cited to the manufacturer's own manual. Daikin uses one alphanumeric error-code set across its residential ductless line. The same table appears in the FTXS-L / FDXS-L pair service manual, the H-Series (FTXS/RKS-HVJU) pair manual, the FTXM-W/V (Atmosphera) manual, and the RMXS multi-split manual, so an A5 or U4 on a 2015 FTXS wall-mount means the same thing as on a current Atmosphera. Multi-zone systems (MXS / RMXS with Branch Provider units) add transmission and address codes (U9, UF, UH, UC, UE) that pair systems never show, and a few codes are re-used with a different meaning on multi-zone hardware (E5 and F6 in particular). Codes are read on the wireless remote's temperature display using the unit's service-check / code-retrieval mode, not on the indoor unit itself..
Mini-Split codes
Manuals used for this page
- Service Manual - Inverter Pair FTXS-L Series / FDXS-L Series (SiUS091133) (Daikin) · checked 2026-08-25
- Service Manual - Inverter Pair Wall Mounted Type H-Series (SiUS04-924_A) (Daikin) · checked 2026-08-25
- Service Manual - Inverter Pair Wall Mounted Type FTXM-W/V Series (SiUS042113EA) (Daikin) · checked 2026-08-25
- Service Manual - Multi-Split Type Air Conditioners RMXS-L Series (SiUS181631EA) (Daikin) · checked 2026-08-25