E1

System

Diagnostic

Symptom

Not specified

Diagnosis & fix steps

High Pressure Cut-out. LOGIC: The pressure switch at the receiver drier has detected >28 bar.

Red Seal field insights

Check the condenser fans (usually behind the cab or on top). If the fans aren't spinning, the pressure spikes instantly and trips E1 to save the compressor.

Track this across your whole fleet

This code is free to read. AM Fleet Integrity lets your team log fault codes against assets, plus the full fault-code library, QR operator reporting, PM scheduling and predictive alerts. Start free — no credit card required.

Start your free trial

← All Liebherr fault codes