How do I fix a “Driver shorted” error on my Hyster R1.4 Forklifts?
If your Hyster Forklifts displays “Driver shorted”, check if there is a short circuit or a low pull-down impedance between NMC (CNA#16) and –BATT. If there isn't, the driver circuit is damaged in the logic board, which must be replaced.
What causes the “Incorrect start tract” error on my Hyster R1.4 Forklifts?
If your Hyster Forklifts displays “Incorrect start tract”, the possible causes of this alarm are: active drive request or man on board sensor with key activated. Check the wiring and microswitches. If it could also be an issue of an incorrect error sequence performed by the operator or a fault in the logic board, after checking all the above conditions and finding nothing, replace the ACE logic board.
What should I do if my Hyster R1.4 shows “Vdc link overv.”?
If your Hyster Forklifts displays “Vdc link overv.”, check the connection of the electrical cables to the battery terminal, positive and negative, to LC and to the control device +Batt and –Batt, ensuring they are tightened to a torque of between 13Nm and 15Nm. If no voltage transient is detected on the power line and the alarm is present every time the key is switched on, then the fault probably lies with the hardware of the control device and so the logic board needs replacing. If the alarm appears during brake release, check the contact of the line contactor and the connection of the electrical cables of the battery.
What does “Stby I high” mean on Hyster R1.4?
If your Hyster Forklifts displays “Stby I high”, the current transducer or the current feedback circuit has a fault in the control device. This type of error is not connected to external components, so when it manifests itself the control device needs replacing.
Why is my Hyster R1.4 Forklifts showing “Forw+back” error?
If your Hyster Forklifts displays “Forw+back”, it means both the (Fwd and Bwd) motion requests are active at the same time. Check the wiring of the inputs of the Fwd and Rev drive requests (see the TESTER items to make troubleshooting easier) and check for any faults with the microswitches. If the drive request switches work properly and the wiring is correct, the ACE-2 logic board needs replacing.
How do I resolve a “Vdc off shorted” fault on my Hyster Forklifts?
If your Hyster Forklifts displays “Vdc off shorted”, it is very likely that the fault is due to overvoltage, therefore you should check the connection of the electrical cables to the battery terminal, positive and negative, to MC and to the control device +Batt and –Batt, ensuring they are tightened to a torque of between 13Nm and 15Nm. If no voltage transient is detected on the line +B and the alarm is present every time the key is switched on, then the fault probably lies with the hardware of the control device and so the logic board needs replacing.
What does “Flash checksum” mean on my Hyster R1.4 Forklifts?
If your Hyster Forklifts displays “Flash checksum”, try reprogramming the logic. If the alarm is still signalled, then the problem is in the microcontroller and you should replace the ACE logic board.
What causes “Tiller mismatch” on Hyster Forklifts?
If your Hyster Forklifts displays “Tiller mismatch”, check the wiring of the Tiller input (use the TESTER items to make troubleshooting easier). If the Tiller switch works properly and the wiring is correct, the ACE-2 logic board needs replacing.
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