Liebherr Fault Code
Free · no signup0x0347
Main Winch Down Blocked / Alarm Active
System
Safety / Interlock
Symptom
Main Winch Down Blocked / Alarm Active
Diagnosis & fix steps
LOGIC: Kelly Rope Drum Minimum 3-Wrap Safety Proximity Switch Signal Low.
ACTION: Check air gap between inductive proximity switch and winch drum gear teeth/flange target (spec: 2–4 mm). Verify 24V power supply and signal return in mast foot box +4V.
Red Seal field insights
Drum Runout Safety: Regulatory requirement to prevent wire rope from stripping off drum anchoring wedge; sensor loss disables downward winch feeding.
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