Results 1 to 6 of 6
  1. #1
    Join Date
    Oct 2005
    Location
    Berks
    Posts
    43
    Rep Power
    0

    Daikin VRV2 Recharging



    Hi
    Not sure If I have a problem or not or I am probably being stupid. Had to replace an expansion valve in outdoor unit REYQ 14. Put unit into recovery mode to open valves etc. Recovered ,Replaced valve body, test, vac,and recharge.I can only get about 4.5kg in. Need 24.5kg . I read on the cover that you cannot add refrigerant while unit is running. Is there another way. or should I have taken it out of recovery mode before recharging. need to get it up and running over the weekend. Any ideas. Thanks



  2. #2
    Join Date
    Oct 2001
    Location
    Nottingham UK
    Posts
    5,733
    Rep Power
    51

    Re: Daikin VRV2 Recharging

    A simpler method would have been to switch the unit off, close the service valves and then just recover the outdoor unit. (this leaves all the indoor circuit intact).

    After recovering and vacuuming I am astonished that you can only get 4kg into the system. With this low charge the unit will not run as it will detect low charge on start up.

    Best way forward now is to put the system into recovery mode,switch off and reclaim the new charge. Then vac out again. Then add liquid directly into the liquid line. Pull a good vacuum (min 2 hours).

    You can add refrigerant while it is running - read the instructions. You have to have the liquid service valve shut while you do this and charge into the liquid line.

  3. #3
    Join Date
    Oct 2005
    Location
    Berks
    Posts
    43
    Rep Power
    0

    Re: Daikin VRV2 Recharging

    Thanks Frank

    How important is the switch off part after setting recovery mode, other than the obvious safety aspect.
    Thanks.

  4. #4
    Join Date
    Mar 2006
    Location
    Glasgow, Scotland
    Posts
    177
    Rep Power
    19

    Re: Daikin VRV2 Recharging

    You could also just set the unit in to mode 2 setting 20, close in the liquid line and attach your gauges to the liquid line with the bottle hooked up and ready to go, the unit will start and basically pump down and allow you to add your refrigerant charge to the system. Unit will run in this mode for half an hour and can be set in again if you need longer. As for turning the unit off after setting recovery mode, Daikin recommend that you switch the system off but from experiance ive had systems in recovery mode with power on for hours! not had any problems yet!

  5. #5
    Join Date
    Oct 2001
    Location
    Nottingham UK
    Posts
    5,733
    Rep Power
    51

    Re: Daikin VRV2 Recharging

    Quote Originally Posted by Birds
    How important is the switch off part after setting recovery mode, other than the obvious safety aspect.
    Thanks.
    Putting the system into recovery mode forces the indoor EEV's fully open. Switching off after this ensures that the valves remain in the open position.

  6. #6
    Join Date
    Jun 2006
    Location
    ATHENS / GLYFADA
    Age
    50
    Posts
    16
    Rep Power
    0

    Re: Daikin VRV2 Recharging

    Good morning my friend .
    I had the same problem to Olympic Beach Volley venue and i do a good vacuum (about 1h 30m) and then i recharge the system again and now it is allright.
    I hope to help you with that.

Similar Threads

  1. Transmission wiring on Daikin VRV2
    By Markie in forum Air Conditioning
    Replies: 19
    Last Post: 25-09-2009, 06:24 PM
  2. Daikin Analyzer
    By marc5180 in forum Fundamentals
    Replies: 10
    Last Post: 02-08-2008, 07:15 PM
  3. Daikin Controllers
    By airefresco in forum Air Conditioning
    Replies: 5
    Last Post: 15-05-2008, 08:08 AM
  4. !!big Daikin Problem!! Codes,u4,pj, And E0
    By airconengineer in forum Air Conditioning
    Replies: 21
    Last Post: 31-05-2007, 09:04 PM
  5. Daikin KRP2A61 Card Power consumption
    By EddieC in forum Air Conditioning
    Replies: 5
    Last Post: 19-08-2006, 04:08 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •