4Troubleshooting

Warning messages and fault messages: if you contact LIEBHERR customer service. Precise information makes it possible to find and rectify the cause of the fault quickly. Additionally, therefore, precise information on the type and serial number of the machine is also required.

Identifying and rectifying faults and errors: incorrect operating or maintenance of the machine.

For each fault, therefore, read the relevant chapter in the operating instructions carefully once more.

If the cause of the fault cannot be recognised or rectified using the error codes and fault charts, please contact the LIEBHERR customer service.

4.1Error code list

Danger!

When switching over to emergency operation, the speed can no longer be changed using the arrow keys on the monitoring screen. The servo control, parking brake and swing gear brake can no longer be activated. in this regard.

The error codes of warning symbols will not be displayed in the EC field of the "Main screen".

Error code EffectCauseMeasure / remedy

E 002Engine oil not being monitored.Short circuit +24VCheck engine oil level, consult LIEBHERR customer service.

E 003Short circuit to earth or Cable break

E 004Coolant level not being monitored. Short circuit to earthCheck coolant level, consult LIEBHERR customer service.

E 005Short circuit +24V

E 006Cable break

E 007Coolant temperature not being monitored.

E 009Short circuit +24V or Cable break

Short circuit to earthCheck that the radiator is not dirty, consult LIEBHERR customer service.

E 010Hydraulic oil level not being monitored.

E 011Short circuit +24V

Short circuit to earthCheck hydraulic oil level, consult LIEBHERR customer service.

E 012Cable break

E 013Hydraulic oil temperature not being monitored.

E 014Short circuit +24V

Short circuit to earthCheck that the radiator is not dirty, consult LIEBHERR customer service.

E 015Cable break

E 016Splitterbox oil temperature not being monitored. (depends on excavators type)

Short circuit to earthCheck oil level, consult LIEBHERR customer service.

E 017Short circuit +24V

E 018Cable break

E 023Short circuit +24V

E 024Cable break

E 022Diesel engine speed not being monitored, diesel engine speed cannot be adjusted using keypad, reduced hydraulic power.

Short circuit to earthSwitch to emergency control speed adjustment S71 and S72 and emergency operation work pumps Y50, consult LIEBHERR customer service.

E 027Faulty hydraulic powerLR cable error at output stage for power control of hydraulic pump

E 030Faulty blade controlEV 4 cable error at output stage of electric valve for blade control

E 033Maximum fan speedEV 5 cable error at output stage of electric valve for hydraulic fan control copyright by

Switch to emergency control speed adjustment S71 and S72 and emergency operation work pumps Y50, consult LIEBHERR customer service.

Consult LIEBHERR customer service.

Consult LIEBHERR customer service.

E 036Flow reduction for hydraulic equipment not being carried out.

E 039Flow reduction for hydraulic equipment not being carried out (from R934, optional extra).

E 042Power reduction for swing movement not being carried out (for R934C and R944C). Attachment movements are slowed down.

E 045Pressure reduction for hydraulic equipment not being carried out.

EV 1 cable error at the output stage for flow regulation of hydraulic pump

EV 2 cable error at the output stage for flow regulation of second hydraulic pump

EV 3 cable error at the output stage for power reduction for swing movement

EV6 cable error at the output stage for pressure regulation of the hydraulic circuit.

Do not operate flow reduced equipment, consult LIEBHERR customer service.

Do not operate flow reduced equipment, consult LIEBHERR customer service.

Consult LIEBHERR customer service.

Do not operate pressure reduced equipment, consult LIEBHERR customer service.

E 063Turbocharged air temperature not being monitored. Short circuit to earthCheck that the radiator is not dirty, consult LIEBHERR customer service.

E 065Short circuit +24V or Cable break

E 070Engine RPM not being monitored. Transmitter output defaultSwitch to emergency control speed adjustment S71 and S72 and emergency operation work pumps Y50, consult LIEBHERR customer service.

E 072Turbocharged air pressure not being monitored. Short circuit +24VCheck the turbocharged air circuit, consult LIEBHERR customer service.

E 073Short circuit to earth or Cable break

E 074Engine does not startStart time outConsult LIEBHERR customer service.

E 075Short circuit to earth or Short circuit +24V or Cable break

E 078Défaut hardwareConsult LIEBHERR customer service.

E 079Défaut software

E 081Engine RPM not being monitored. Transmitter B12-1 defaultSwitch to emergency control speed adjustment S71 and S72 and emergency operation work pumps Y50, consult LIEBHERR customer service.

E 082Transmitter B12-2 default

E 084Cold start command defaultUnit 1 of cold start command over current Consult LIEBHERR customer service.

E 085Unit 1 of cold start command default

E 086Open load for Unit 1 of cold start command

E 087Engine RPM not being monitored. The values registered by the transmitters B12-1 and B12-2 are different.

E 088Atmospheric pressure not being monitored. Short circuit +24V or short circuit to earth or cable break copyright by

Switch to emergency control speed adjustment S71 and S72 and emergency operation work pumps Y50, consult LIEBHERR customer service.

Consult LIEBHERR customer service.