Liebherr Fault Code

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0x043A

Concrete Pump Telemetry Blank / Alarm

System

CFA / Concrete

Symptom

Concrete Pump Telemetry Blank / Alarm

Diagnosis & fix steps

LOGIC: Tremie Concrete Injection Flow Meter Signal Current Below 4mA. ACTION: Check magnetic-inductive flow meter harness on Kelly head / auger swivel. Measure 24V loop power supply; inspect cable for damage from concrete splatter and hose whip.

Red Seal field insights

Pile Integrity: Litronic uses concrete volume versus auger extraction depth to plot pile profile charts; loss of 4–20mA loop drops automated auger pull synchronization.

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