Troubleshooting
MERGE 10-17
Chapter 10
1,3 ¤ ¤¤¤ Speed sensor failure
1,4 ¤ ¤¤¤¤ HPD failure
1,5 ¤ ¤¤¤¤¤ Motor failure
2,1 ¤¤ ¤ Low voltage in the battery
2,2 ¤¤ ¤¤ Over voltage
2,3 ¤¤ ¤¤¤ Over/less temperature off
2,4 ¤¤ ¤¤¤¤ Lack of currency on the driving output in
the main contactor
2,5 ¤¤ ¤¤¤¤¤ Auxiliary contactor is open
3,1 ¤¤¤ ¤ Driving input of main contactor is over
currency
3,2 ¤¤¤ ¤¤ Main contactor is weled
3,3 ¤¤¤ ¤¤¤ The inner voltage is too low during start
3,4 ¤¤¤ ¤¤¤¤ Excitation damage
3,5 ¤¤¤ ¤¤¤¤¤ Auxiliary contactor is over currency
4,1 ¤¤¤¤ ¤ Field currency speed sensor is failure
4,2 ¤¤¤¤ ¤¤ The driving of main contactor or auxiliary
is over currency
4,3 ¤¤¤¤ ¤¤¤ Inner M-is short circuit to B-
4,4 ¤¤¤¤ ¤¤¤¤ The auxiliary is delay of close
4,5 ¤¤¤¤ ¤¤¤¤¤ Auxiliary contactor is delay of weled
5,1 ¤¤¤¤¤ ¤ Key switch SRO failure
5,2 ¤¤¤¤¤ ¤¤ The coil of main contactor is open
5,3 ¤¤¤¤¤ ¤¤¤ Less currency on the coil
5,4 ¤¤¤¤¤ ¤¤¤¤ antislip circuit failure or antislip fuse is
open circuit
5,5 ¤¤¤¤¤ ¤¤¤¤¤ Main contactor is open
Picture 2. 1268 controller LED diagnosis table
Note: one time only display one failure, the failures are not in order. If there is some mistake on the
SRO, you could eliminate it by converting the lock switch or key switch.
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