Hitachi inverter fault

[Paul a/c]

Hi guys been called to a hitachi RAS-8FSG vrv system with a. Inverter fault 52 been to outdoor unit compressor start on start winding but dose not go to run winding trips out then P7 comes up on outdoor unit , dose any one know what this P7 mean on outdoor PCB
thanks
paul

[install monkey]

http://www.mediafire.com/download/57...ITACHI_fs2.pdf
click on link for service manual for a ras 8 fs- r22 inverter
inverter compressors have 3ph to terminals- no run winding- on ras 8 - twin compressors- 1 direct online- and 1 inverter- within the same shell. if 1 comp is goosed then u can either disconnect dol or inv compressor and it will still run- p07 fault refers to reversing valve pressure diff strange- maybe ur pot aint pumping

[Paul a/c]

Cheers il check that out system is on R407c . It must be one of the first 407C it say it was made in 2000

[install monkey]

hitatchi 407c manual
happy reading- file is a bit bigger so will take longer
http://www.mediafire.com/download/am...ne_service.pdf

[install monkey]

http://www.mediafire.com/download/d1...1_r0_06-01.pdf
fs3 unit-