Haulotte Optimum 8 (Optimum 1931 E): electric scissor lift, newer generation
Haulotte error code F01.01 — Inverter Master
Message on the display: Inverter Master
Code F01.01 occurs in machines: Haulotte OPTIMUM 8, OPTIMUM 1931 E.
blocking fault
[case 1] COMBIACX: Failure in the high current hardware protection circuit. Internal failure. [case 2] COMBIACX: When no current is applied to the traction motor, the current feedbacks are out of permitted standby range. Type of default not related to external components. Cycle power to clear the fault. If the fault is not cleared, replace the controller. [case 4] COMBIACX: Driver of main contactor coil is damaged (not able to close). Type of default not related to external components. Cycle power to clear the fault. If the fault is not cleared, replace the controller. [case 8] COMBIACX: The driver of the electromechanical brake coil is not able to drive the load. Internal failure. [case 16] COMBIACX: Pump current sensor out of range (at start-up or standby). Internal failure. [case 32] COMBIACX: At start-up, the amplifiers voltage (used to measure the motor voltage) is too low or too high (< 2 V or > 3 V). Internal failure.
Description from the Haulotte service manual, in the original wording.
Possible causes
- Replace the inverter.
- Replace the controller.
What you can do
Switch the machine off with the emergency stop and switch it on again. If the code comes back, do not use the machine and call service.
Solution from the manual
Replace the inverter. Replace the controller. Replace the controller. Replace the controller.
Source: Haulotte Maintenance Book Optimum 8 (4001069810), fault codes chapter.
The descriptions are quoted from the manufacturer's service documentation and are for guidance only. Clearing codes, calibrations and repairs are carried out by a qualified service technician according to the manual for the specific serial number. A machine with an active blocking code must not be used until the cause has been removed.
Does code F01.01 not go away?
RK Rental services Haulotte lifts at our workshop or on site at the customer's premises (construction site, factory, warehouse). We read the code, remove the cause and select the parts by serial number.
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