Hi again.The problem persists!
Strange one,i drived the forklift for a while,and nothing wrong happens,but as soon i lift or lower the forks at the same time i was going forward,the light "!" stays on and i lost traction,but all hidraulic functions works ok,including lift and lower.Then switch key off and on again and everything works normally.I noted that this issue only comes when using traction and hidraulics at the same time(only forward,never happen on reverse).
Wonder if some one had similar issue,and could give me a clue.
Best regards to all.