how to record a fault on a Daikin FTKZ air conditioner for service
for Daikin FTKZ09VV2S and FTKZ12VV2S fault guidance covering U0, U4, A5, C4, A6 and E7, record the code confirmed by the manual's remote check only if safe. stop operation and give a qualified air-conditioning technician that code and the full model number.
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scope: Daikin FTKZ09VV2S and FTKZ12VV2S: U0, U4, A5, C4, A6 and E7.
when to get help
- for a burning smell, water leakage or repeated breaker trips, stop and isolate power only if safe. do not run another fault check or reset; arrange qualified help.
diy warning
working on appliances can involve mains electricity, water and moving parts. always disconnect power and water before you start. in Australia, gas work must be done by a licensed gasfitter, and fixed (hard-wired) electrical work by a licensed electrician. everything on this site is guidance only, and any repair you carry out is at your own risk. we are not responsible for any damage or injury caused by attempting a repair. if you are not confident, please use a qualified technician.
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steps
- confirm the displayed fault
only if safe, use the remote documented for FTKZ09VV2S and FTKZ12VV2S. hold cancel for about five seconds until 00 blinks, then press cancel repeatedly until a long beep confirms a code. write down that code. a short beep or merely scanning past U0, U4, A5, C4, A6 or E7 does not confirm it.
- stop the unit and book service
stop operation and report the confirmed code and full model number when arranging service. do not repeatedly reset the fault. leave covers closed: wiring tests, refrigerant handling and bypassing protection are not home checks.
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related problems
- what does A5 mean on a Daikin FTKZ09VV2S or FTKZ12VV2S?on the two named FTKZ models, A5 indicates high-pressure control or freeze-up protection has operated. record the confirmed code and stop for service.
- what does A6 mean on a Daikin FTKZ09VV2S or FTKZ12VV2S?A6 identifies the indoor fan-motor fault area on these models. it does not establish that buying a fan motor will resolve the problem.
- what does C4 mean on a Daikin FTKZ09VV2S or FTKZ12VV2S?the documented C4 warning concerns heat-exchanger temperature sensing. sensor and connection diagnosis belong to service, not a remote-control repair.
- what does E7 mean on a Daikin FTKZ09VV2S or FTKZ12VV2S?E7 is the outdoor dc fan-motor fault indication for the named models. keep the outdoor cover closed and arrange qualified assessment.
- what does U0 mean on a Daikin FTKZ09VV2S or FTKZ12VV2S?the manual identifies a refrigerant-shortage indication. the cause needs qualified assessment, not an assumed top-up or diy refrigerant work.
- what does U4 mean on a Daikin FTKZ09VV2S or FTKZ12VV2S?U4 concerns communication between indoor and outdoor units. it is not a remote-battery warning and does not identify a failed board.
