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  1. 27-08-2012, 06:19 AM #1
    savoc's Avatar
    savoc
    savoc is offline regular poster
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    Daikin ry160luy1 error code



    Hi guys have trouble with a unit. Comes up with code U4. indoor fan motor runs, checked all connections on indoor and out door unit. Green light on outdoor and indoor unit flashing. Voltages all appear all okay (3phase and neutral) Spoke to technical support waited 1/2hour. Support guy spent 1 minute on phone with me and said outdoor board needs replacing. Also he said check the fan motors, i asked for some resistance readings and said he could not help with that. I unpluged fan motors and checked from red to the other colours both motors had different readings. What readings should i have? Are there any test to check the outdoor board? this is a/c is not a inverter. Any help would be helpful.


  2. 27-08-2012, 08:03 AM #2
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    install monkey
    install monkey is offline VIP Poster I am starting to push the Mods: of RE
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    Re: Daikin ry160luy1 error code

    u4 is comms error between indoor/outdoor pcb signal voltage on terminal 2 i think on ry kit- voltage should be a pulsed signal of upto 150vac fluctuates down to 22vac
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