Zoomlion ZS series scissor lifts (ZS0407, ZS0607, ZS0608, ZS0808, ZS0812, ZS1012, ZS1212, ZS1414)

Zoomlion error code 73 — Motor Controller Thermal Cutback Fault

Q: What does code 73 mean on a Zoomlion lift?

Motor Controller Thermal Cutback Fault. The Zoomlion service manual names code 73 “Motor Controller Thermal Cutback Fault” (our translation of the Polish edition). It is a blocking fault or a safety-related code: do not use the machine until the cause has been found and removed. Effect on the machine: Disable All Motion

Q: What should I do when a Zoomlion shows code 73?

Solution: The drive or lift motor may be overheating. Wait until the lift has cooled down. If that does not help, cycle the power to reset the motor controller. If that does not resolve the problem, replace the motor controller. Clearing the code and calibrations are carried out by service according to the manual for the machine's serial number.

Fault name in the manual (our translation from Polish): Motor Controller Thermal Cutback Fault

Code 73 occurs in machines: Zoomlion ZS0407, ZS0607, ZS0608, ZS0808, ZS0812, ZS1012, ZS1212, ZS1414.

blocking fault

The Zoomlion service manual names code 73 “Motor Controller Thermal Cutback Fault” (our translation of the Polish edition). It is a blocking fault or a safety-related code: do not use the machine until the cause has been found and removed.

Effect on the machine: Disable All Motion

Possible causes

The manual does not list the causes for this code: the service technician establishes them during diagnosis of the machine.

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

The drive or lift motor may be overheating. Wait until the lift has cooled down. If that does not help, cycle the power to reset the motor controller. If that does not resolve the problem, replace the motor controller.

Source: Zoomlion Service and Maintenance Manual for scissor lifts, Polish edition (version C, March 2023), tables 3-1 and 3-2. The manufacturer's manual for these machines is available only in Polish. The fault names and descriptions marked as translated are our English translation of the Polish edition, not the manufacturer's own wording.

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 73 not go away?

RK Rental services Zoomlion 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.

Book a service

Zoomlion service · Spare parts · All Zoomlion codes of this system

Zoomlion error code 73 — Motor Controller Thermal Cutback Fault

Possible causes

What you can do

Solution from the manual

Neighbouring Zoomlion codes