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  1. #1
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    Daikin fault codes



    Hi there.

    Does anyone out there have the fault codes for daikin units
    i have no problems so far but i have started to service alot of them lately and would like to have the info if needed nothing worse than the customer asking what it means and you dont no..

    Thanks.



  2. #2
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    Re: Daikin fault codes

    hers some



    DAIKIN MALFUNCTION CODES
    Code Place Description
    AO Indoor Error of external protection device
    A1 Indoor PCB defect
    A3 Indoor Malfunction of drain Level control system
    A5 Indoor Freeze-up prevention
    A6 Indoor Fan motor lock, Overload
    A7 Indoor Malfunction of swing motor flap
    A9 Indoor Malfunction of EEV
    AF Indoor Drain level above limit (clogging)
    AJ Indoor Malfunction of capacity set device
    C3 Indoor Malfunction of drain thermistor
    C4 Indoor Malfunction of liquid pipe thermistor
    C5 Indoor Malfunction of gas pipe thermistor
    C7 Indoor Lower louvre limit switch/motor
    C9 Indoor Malfunction of air thermistor
    CC Indoor Malfunction of moisture sensor
    CA Indoor Malfunction of discharge air thermistor
    CJ Indoor Malfunction of remote control thermistor
    CE Indoor Malfunction of radiant heat sensor
    E0 Outdoor Activation of outdoor safety device
    E1 Outdoor PCB defect
    E3 Outdoor Activation of high pressure switch
    E4 Outdoor Activation of low pressure switch
    E5 Outdoor Activation of compressor over heat protection
    E5 Outdoor Compressor motor lock
    E6 Outdoor Compressor start up error
    E6 Outdoor Standard compressor lock/overcurrent
    E7 Outdoor Fan motor lock, Overload
    E8 Outdoor Inverter input overcurrent
    E9 Outdoor Malfunction of EEV
    EA Outdoor Four way valve defective.
    F3 Outdoor Abnormal discharge pipe temperature
    F6 Outdoor Refrigerant overcharged
    FC Outdoor Low pressure drop.
    H3 Outdoor High pressure switch defect
    H4 Outdoor Low pressure switch defect
    H6 Outdoor Compressor motor position detection sensor error
    H7 Outdoor Fan motor position detection sensor error
    H8 Outdoor Current transformer error
    H9 Outdoor Malfunction of air thermistor
    J1 Outdoor Malfunction of pressure sensor
    J2 Outdoor Current sensor malfunction
    J3 Outdoor Malfunction of discharge pipe thermistor
    J4 Outdoor Low pressure saturation thermistor
    J5 Outdoor Malfunction of suction pipe thermistor
    J6 Outdoor Malfunction of heat exchanger thermistor
    J7 Outdoor Malfunction of heat exchanger liquid thermistor
    J8 Outdoor Malfunction of liquid pipe thermistor
    J9 Outdoor Malfunction of gas pipe thermistor
    JA Outdoor Malfunction of discharge pipe pressure sensor
    JC Outdoor Malfunction of suction pipe pressure sensor
    JH Outdoor Malfunction of oil temperature sensor
    L0 Outdoor Malfunction of inverter
    L3 Outdoor Electronic component box overheat
    L4 Outdoor Inverter cooling defect
    L5 Outdoor Comp motor ground fault, Short circuit
    L6 Outdoor Compressor motor grounding/short circuit
    L7 Outdoor Total input overcurrent
    L8 Outdoor Comp overload, Motor disconnected
    L9 Outdoor Compressor lock
    LA Outdoor Power unit malfunction
    LC Outdoor Transmission between inverter & outdoor
    P1 Outdoor Inverter over ripple
    P3 Outdoor Thermistor abnormality
    P4 Outdoor Power unit humidity sensor malfunction
    PJ Outdoor Failure of capacity set resistor
    U0 System Shortage of refrigerant or EEV failure
    U1 System Negative phase, Open phase
    U2 System Power supply insufficient
    U3 System Wiring check operation not executed
    U3 System Mismatch of indoor and outdoor units (Split only)
    U4 System Transmission between indoor units
    U5 System Transmission to remote controller
    U6 System Malfunction transmission outdoor to BP unit
    U7 System Transmission between outdoor units
    U7 Outdoor Malfunction between outdoor boards(RMX/RX RK)
    U8 System Transmission between master & slave R/C
    U9 System Transmission error between indoor to outdoor
    UA System Excessive number of fancoils
    UC System Address duplication of central controllers
    UE System Transmission error between indoor & central
    UF System Refrigeration system not set/wiring - piping
    UF System Terminals 1 and 3 crossed (Split/Skyair)
    UH System System error, Refrigeration system set up
    M1 System PCB defect
    M8 System Transmission error between central controllers
    MA System Improper combination of optional controllers
    MC System Address duplication, Improper setting
    64 VAM Indoor unit air thermistor error
    65 VAM Outside air thermistor error
    68 VAM
    6A VAM Damper system alarm
    6A VAM Damper system and thermistor error
    6F VAM Malfunction of remote controller
    6H VAM Malfunction of door switch or connector
    94 VAM Internal transmission error
    Grey fault codes, system still runs, but check ASAP














    cheers

    richard

  3. #3
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    Re: Daikin fault codes

    And if you are working on the VRV, here's a link to the centralised controller and fault codes. A handy guide http://www.daikinac.com/pdf/op_manual/DCS302C71.pdf

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    Thumbs up Re: Daikin fault codes

    Thanks for the codes they will be very handy at least a wont have to stand there looking puzzled if i see them on the screen..

    cheers..

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    Re: Daikin fault codes

    i need some help about Daikin Split unit.I had replace a PCB on the outdoor unit with the same setting which were on the old one ( visual).After starting i got a fault "PJ" ( PJ Outdoor Failure of capacity set resistor ).Can someone tell me how to solve that problem.Thanks in advance.
    Last edited by kipetkov; 03-07-2007 at 05:24 PM.

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    Re: Daikin fault codes

    Quote Originally Posted by kipetkov View Post
    i need some help about Daikin Split unit.I had replace a PCB on the outdoor unit with the same setting which were on the old one ( visual).After starting i got a fault "PJ" ( PJ Outdoor Failure of capacity set resistor ).Can someone tell me how to solve that problem.Thanks in advance.
    What is the outdoor unit type?.
    You have to set Capacity Adapter to PCB which tells outdoor unit 'size'. (Spare parts PCB don't have 'size' settings in it.)

    Hopefully this helps.

  7. #7
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    Re: Daikin fault codes

    Quote Originally Posted by kipetkov View Post
    i need some help about Daikin Split unit.I had replace a PCB on the outdoor unit with the same setting which were on the old one ( visual).After starting i got a fault "PJ" ( PJ Outdoor Failure of capacity set resistor ).Can someone tell me how to solve that problem.Thanks in advance.
    The replacement PCB should have been supplied with a small plug and wire loop which needs to be fitted to the PCB in accordance with the instructions with the board.

    This sets the capacity of the unit.
    Brian - Newton Abbot, Devon, UK
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    Re: Daikin fault codes

    inormally just use the new daikin text service text them the fault code and they reply within seconds excellent or even better ring them if your confused good luck

    adam

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    Re: Daikin fault codes

    THanks for the fast replay.With the PCB have not arrive with a plug i checked few times.The model number is : RYEP100L7W1.Is that mean that i need just to plug it in and it will start working or there is another steps which have to be done? Thanks in Advance.

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    Re: Daikin fault codes

    Look at the boards side by side, on the original board you will find a plug that's not on the new board (normally it's a plug with a looped cable in it but there are other versions, just a plug with internal short, the cable replaced by a resistor are the ones that springs to mind).

    Then just move the plug across.

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    Re: Daikin fault codes

    Quote Originally Posted by The Viking View Post
    Look at the boards side by side, on the original board you will find a plug that's not on the new board (normally it's a plug with a looped cable in it but there are other versions, just a plug with internal short, the cable replaced by a resistor are the ones that springs to mind).
    I've had this many times on replacement indoor boards but never on an outdoor board??

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    Re: Daikin fault codes

    Quote Originally Posted by frank View Post
    I've had this many times on replacement indoor boards but never on an outdoor board??
    Had it on the last one I swapped last year.

    Forgot all about it until I powered it up and got the fault code.

    Found the capacity plug taped to the underside of the packing neatly stuck to the bubble wrap
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    Re: Daikin fault codes

    Quote Originally Posted by The Viking View Post
    Look at the boards side by side, on the original board you will find a plug that's not on the new board (normally it's a plug with a looped cable in it but there are other versions, just a plug with internal short, the cable replaced by a resistor are the ones that springs to mind).

    Then just move the plug across.
    I checked- nothing.Most probably the company installed has removed them from the unit if there is or the DAIKIN company miss to fit one in the box.
    Is that mean that i can just a normal cable to brige it or there is a special resistor in that plug?.Maybe my ? are stupid but DAIKIN are not the one which i use to services them) i dont know nothing about them ).Thanks in advance .
    P.s.-if someone can tell me the step by step what i have to do.Friday is the last day.Its in the school with sick childrens.
    Last edited by kipetkov; 05-07-2007 at 08:23 PM.

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    Re: Daikin fault codes

    just changed a board on vrv k series, just changed capacity setting / ch setting and worked fine

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    Re: Daikin fault codes

    Quote Originally Posted by Contactor View Post
    just changed a board on vrv k series, just changed capacity setting / ch setting and worked fine
    Mostly VRV's PCB have built-in dip switches which can change HP settings but Sky-Air is different story. If you can borrow somewhere right capacity settings adapter you can measure it and put resistor with right omhs that 'simulate' original part.

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    Re: Daikin fault codes

    Finaly i went to the supplier and i got the proper plug for the PCB.Now the unit works fine.Thanks to everyone

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    Re: Daikin fault codes

    Glad the hear that your problem is resolved.

    Shame that you were not supplied with the correct parts at the start.
    Brian - Newton Abbot, Devon, UK
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  18. #18
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    Re: Daikin fault codes

    Hi, I have a default code E4:Outdoor Activation of Low Pressure Switch. Can anyone tell me what this means?

  19. #19
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    Re: Daikin fault codes

    Can someone please help me. Have installed dakin 8kw reverse cycle split sytem in australia. code is U2 Power supply insufficient. Still registers 235 volts. outdoor Fan starts up for about 30 secs then when compressor starts to kick in it shuts down showing u2 fault even though voltage is correct.

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    Re: Daikin fault codes

    hi frank dont know if anyone else has tried but i cant get to that page from the hyper link!!

    is it me?

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    Re: Daikin fault codes

    Re the U2 error question from AOE
    Can someone please help me. Have installed dakin 8kw reverse cycle split sytem in australia. code is U2 Power supply insufficient. Still registers 235 volts. outdoor Fan starts up for about 30 secs then when compressor starts to kick in it shuts down showing u2 fault even though voltage is correct.


    Disconnect the lead from the compressor and try and run the system without the compressor.
    If it works OK or flag up a different code then reconnect the compressor (after you killed the power) and try to run it again, this time measure the voltage on the terminals of the compressor as it tries to start (Note: Use a good quality meeter, otherwise there is a risk of false readings, see other treads on this matter).

    If the voltage by the compressor drop when the compressor is starting then you are looking for a poor connection somewhere. If you get the U2 error when the compressor is disconnected, then you are looking at something with the controls.
    Last edited by Brian_UK; 19-07-2007 at 08:02 PM. Reason: Added the quote from the originator.

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    Re: Daikin fault codes

    Quote Originally Posted by JPORDUDE View Post
    Hi, I have a default code E4:Outdoor Activation of Low Pressure Switch. Can anyone tell me what this means?
    Sounds like the low pressure switch has reacted to a low pressure in the system.
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  23. #23
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    Re: Daikin fault codes

    Quote Originally Posted by davej View Post
    hi frank dont know if anyone else has tried but i cant get to that page from the hyper link!!

    is it me?
    The link is 2 years old, Daikin have probably changed their site since then.

    Try searching their website for the info.
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    Re: Daikin fault codes

    Quote Originally Posted by aoe View Post
    Can someone please help me. Have installed dakin 8kw reverse cycle split sytem in australia. code is U2 Power supply insufficient. Still registers 235 volts. outdoor Fan starts up for about 30 secs then when compressor starts to kick in it shuts down showing u2 fault even though voltage is correct.
    Check the size of the mains wiring. It is no good relying on a voltage reading when there is no load applied. Volt drop can cause a U2 error. Always take a voltage reading when the unit is running.

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    Re: Daikin fault codes

    Quote Originally Posted by Brian_UK View Post
    The link is 2 years old, Daikin have probably changed their site since then.

    Try searching their website for the info.
    Thanks Brian

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    Re: Daikin fault codes

    e mail me at -
    The E mail address is removed - please contact him via the PM facility -
    and i will send them to you..

    Quote Originally Posted by Chris2005 View Post
    Hi there.

    Does anyone out there have the fault codes for daikin units
    i have no problems so far but i have started to service alot of them lately and would like to have the info if needed nothing worse than the customer asking what it means and you dont no..

    Thanks.
    Last edited by Argus; 24-11-2007 at 12:06 PM. Reason: e amil address removed

  27. #27
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    Re: Daikin fault codes

    I Have Found That When The Error Code E4 Comes Up Normally On A New Unit(installation) The Remedy To The Fault Is Just By Double Checking That The Prssure Transducer Is Connected Securly As It Does Come Dislodged When You Accidently Brush It With Your Hand After Removing You Gauges From A Vacum I Have Been Caught Out Like That Before

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    Re: Daikin fault codes

    I have a unit that I personally have not seen, Unit Model = FTXS25D2 with fault code = A6 Fan motor, Lock/Overload. The blades for the fan run freely, no blokages or grating. Should I just replace the part or could it be fixed? Also could anyone offer me the schematic diagram or tell me how easy it is to pull the fan motor out of the unit. The reason I ask is the cliant is not local so I need to prepare in advance and never changed the fan motor in this unit before.

    Thank you in advance if anyone can provide me with some info.

    Cheers.

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    Re: Daikin fault codes

    Possible reasons :
    1) Faulty fan motor.
    2) Faulty indoor unit's P.C.B.
    3) Fan motor cable broken or not connected (S1 connector on the P.C.B)..

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    Re: Daikin fault codes

    Quote Originally Posted by basti View Post
    Possible reasons :
    1) Faulty fan motor.
    2) Faulty indoor unit's P.C.B.
    3) Fan motor cable broken or not connected (S1 connector on the P.C.B)..
    Hmm, the unit once switched on calls for the outdoor unit and starts to cool/heat with compressor running and the indoor coil cooling/heating but indoor fan motor dosn't start, 60secs later unit shuts down to protect unit.

    Dose this still sound like a PCB Fault and how can I make a check for sure? How can I check the PCB?

  31. #31
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    Re: Daikin fault codes

    Quote Originally Posted by koy View Post
    Hmm, the unit once switched on calls for the outdoor unit and starts to cool/heat with compressor running and the indoor coil cooling/heating but indoor fan motor dosn't start, 60secs later unit shuts down to protect unit.

    Dose this still sound like a PCB Fault and how can I make a check for sure? How can I check the PCB?
    Koy,

    This is the service manual for that model, start at page 152 for your A6 fault code.

    http://www.daikinac.com/residential/...e%20Manual.pdf

    There are other manuals on the Daikin site if you want...
    http://www.daikinac.com/residential/...c=docs&page=39
    Brian - Newton Abbot, Devon, UK
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    Re: Daikin fault codes

    Brian the 2 links you have put up are very useful...thanks................but do you know if daikin do a manual (Like your first link) for there FUQ-B range iv had a look around the web and there site's but im unable to find anything like that one ???? any help please thanks

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    Re: Daikin fault codes

    i may have the book you need, its a pdf, version if you let me have an email address i will email to you.

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    Re: Daikin fault codes

    Quote Originally Posted by basti View Post
    Possible reasons :
    1) Faulty fan motor.
    2) Faulty indoor unit's P.C.B.
    3) Fan motor cable broken or not connected (S1 connector on the P.C.B)..

    I have to say that in my opinion the most likely fault here is that of a failed indoor fan motor capacitor. Value will be between 0.7 and 1.2 microfarad . It will be soldered to the PCB and should be obvious. It is not a difficult job to de-solder and change... You may even be able to attach miniature croc leads and connect a new one first before de-soldering.
    Good luck
    Trevor

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    Re: Daikin fault codes

    Thanks davej e-mail address sent

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    Re: Daikin fault codes

    hi,


    u2 means system power insufficient.

  37. #37
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    Re: Daikin fault codes

    hi, on the daikin i was servicing the F3 code was showing and I stopped the unit because of refrigeration leak which has been fixed now, but it keeps showing F3. does anyone know how to reset the unit? thanks

  38. #38
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    Re: Daikin fault codes

    We have a 9 year old FTXD50JVEA which has an H6 fault code. Developed identical problem / symptoms under warranty. Compressor wouldn't run, but turned out to be the board. Took 7 visits before they worked it out.
    History repeats now, but all personalities and records have gone.
    Any thoughts / suggestions?
    The engineer is surprised he is getting no output current from the compressor, even if it is not running.
    What sort of Mean Time Between Failure (MTBF) are companies like Daikin working on for boards, compressors and fans. We use for heating only, 2 months of the year, and only in the evening, so running only 18 months out of nine years. Are we unlucky or is this normal?

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    Re: Daikin fault codes

    anybody ever had an F4 fault on a daikin vrv 3 ? any info please ?

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    Re: Daikin fault codes

    the only thing i found was this

    F4Outdoor Unit: Humidity alarm
    Remote
    Controller
    Display
    F4
    Applicable

    Models
    RQYQ-PY1

    PQEQ-PY1

    Method of

    Malfunction

    Detection
    The condition of the liquid refrigerant returning to the compressor is detected by the

    temperature and pressure of any part during the cooling operation.

    Malfunction

    Decision

    Conditions

    When the following humidity condition continues for 30 minutes

    Supposed

    Causes

    ��

    Faulty suction pipe thermistor

    ��

    Faulty discharge pipe thermistor

    ��

    Defect of high pressure sensor

    ��

    Defect of indoor unit electronic expansion valve

    ��

    Contamination

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    Re: Daikin fault codes

    thanks for that. bit of an head scratcher

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    Re: Daikin fault codes

    hey guys any one got info on DAIKIN RSEYP10K7W1?

  43. #43
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    Re: Daikin fault codes

    Hey guys any one can help me to fix U4 error code of daikin inverter?

  44. #44
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    Re: Daikin fault codes

    Quote Originally Posted by davej View Post
    i may have the book you need, its a pdf, version if you let me have an email address i will email to you.
    could you pls. send me the pdf
    Last edited by frank; 21-03-2012 at 09:48 PM.

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    Re: Daikin fault codes

    start a new thread and quote the model number-and dont post your e mail onsite,members can access it if req in your home page- click on a thread-in this case air conditioning,then click to start a new post-normally members upload manuals via rapidshare

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    Re: Daikin fault codes

    Quote Originally Posted by pere View Post
    Hey guys any one can help me to fix U4 error code of daikin inverter?
    if you pay the travel :-)

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