samsung aqvfan12 problems

hi all,
6 months ago I did a pump down and uninstalled the above inverter unit aqv12fan with no problems. Last week the unit was reinstalled by another person, but it locks out after a few minutes with the timer and turbo lights flashing. i had a quick look at it (checked indoor and outdoor fuses) but it not really sure what im looking for as far as fault finding goes.
thanks.

does anyone have a copy of the service manual for this model (aqv12fan)?

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Does anyone have the service manual for AQV12EWCN or the option codes for this unit pls.