Dc / dc convertor seems to be the problem.It' s cut the 24 power supply to 10- 12 volts.But i see that this convertor supply also the fans for cooling.The forklift is from 2004 , 3 phase drive motors on front.But i saw 3 fans. 1 fan is mounted on the hydraulic pump , 1 fan is cooling the 2 power electronic modules and 1 fan is cooling an electronic module rear the baterry.
And on the schematic i see
4 fans..I don' t find fan nr 4 that shoud cooling the drive motors.In reality wher is mount this fan
?
And...this converter dc/ dc 80/ 24v can go to a safe mode when it receve at 24 v wires , a short..or something like that.?
On the circuit is also a fuse..but maybe he has some electronics inside and when see a highter current , enter in safe mode.Or not ?