Hi guys I been on Stay be and had callout to see job after my colleague to see VRV 3 after compressor change . So he does change compressor and fit new filterdrier on liquid line directli behind compressor in outdoor unit and put refrigeration in ofcourse after proper vacuum . I came there he said he done TEST but it showed me U3 . So I tried to do TEST again an after two hours still not finished :( LEDs in 14 parameter off blink off off blink blink blink off and during test :
Blink Blink off Blink off off Blink blink .
U3 and U9 were on infra controller .
Please what should we do to make it work please .
If anyone has service manual I will appreciate it to sent on my email
Thanks a lot for any help or advice .
P.S I think VRV 3 has got autocharging refrigeration but I dont know how to do it :(
RXYQ12P7W1B thats the Model .
Have Nice Day
