I need some help with a forklift-komatsu-fb15ex-7 arion, controller-3ba-47-41111. When hitch forward or backward it works normally. After 10 minutes it stops and appears error "3" turn off contactor and then appears error "23", hydraulic and steering work normally. I turn off the key and after the 10 beeps I turn on the key and it becomes normal. After, more or less, one hour of work, when I put forward or back, error 23 and error 3 appears again, but it appears only in the position neutral. First error was error 8, then 3 and at last trhe error 23. Now i have only error 3 and 23. The led's indicator in the memory circular plate (on the left and bottom with a battery), first LED 10 turned on, then turned off, but turned on the led 6 and at last turned on the led 5. Have I a problem with the board and I must replace it or could be other anomaly? I use only the multimeter and i have no other diagnose equipment. Thank's a lot for the help. I saw your email in the forkliftaction. I live in Portugal. I have complete manual of Acroba provided in a TCM training.