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Thread: sanyo vrf

  1. #1
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    sanyo vrf


    hi
    have a vrf system that has a caution sign displaying on all controllers connected, is therea way of finding out whats wrong? suspect it might be short

    any ides philip



  2. #2
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    Re: sanyo vrf

    Unit has gone into auto backup mode. Inverter compressor has been disabled. Try resetting by isolating outdoor power. If problem persist, check inverter compressor and inverter.

  3. #3
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    Re: sanyo vrf

    Quote Originally Posted by philjd26 View Post
    hi
    have a vrf system that has a caution sign displaying on all controllers connected, is therea way of finding out whats wrong? suspect it might be short

    any ides philip
    In some situations, auto address may have not been completed. A caution icon will display on all controllers in this circumstance.

    Has this system ran in the past, or is a new start-up? You may want to dis-connect power both Indoor and Outdoor and re set the entire system. Once power has been applied ...try auto address again....allow LED 1 and 2 to go completely out. If they are both out and not flashing together....try running the system.

    Hope this helps,
    Husky

  4. #4
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    Re: sanyo vrf

    hi still having no joy with this problem...i have 3x vrf connected in common, i check alarm outdoor leds,all leds off....

    i checked all inverters diodes, transistors and windings for balance... all seem good,

    any ideas ?/
    Last edited by philjd26; 04-12-2008 at 10:24 AM.

  5. #5
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    Re: sanyo vrf

    Quote Originally Posted by sigorst View Post
    Unit has gone into auto backup mode. Inverter compressor has been disabled. Try resetting by isolating outdoor power. If problem persist, check inverter compressor and inverter.

    read your PM's !!!!!
    Paul


    "KEEP IT COOL"

  6. #6
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    Re: sanyo vrf

    HI Philjd,

    Swill is correct Inverter compressor has shut down for some reason

    Could be any of the following

    Faulty HIC PCB
    Loose conection on PCB or Compressor
    (we'll assume you have checked all the basics)
    Low on gas on full load compressor may overheat Discharge temp above 108-111 degrees C.
    Pumpdown due to an SVK connected to an indoor not opening.

    High pressure for same reason in heating

    possible faulty compressor.

    Many more reasons.

    It's easy enough to check all of the above by connecting a standard sanyo remote control to the outdoor unit on terminals 3and4 then entering the sensor check mode.

    It's possible to check all system temperatures, pressures
    and current sensors by doing this in real time.



    If you want a service manual drop me a PVT message with your email and I'll send one on to you.

    Apologies for the late reply been real busy here

    T

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