What does Alfa Laval error code OL mean?

Error code OL on Alfa Laval equipment indicates compressor overload — check motor current draw. Refer to the Alfa Laval service manual for specific diagnostic steps and safety precautions before troubleshooting.

How do I reset a Alfa Laval unit after a fault?

To reset a Alfa Laval unit, first resolve the root cause of the alarm. Then power cycle the unit or press the reset button on the controller. For Alfa Laval systems with digital controllers, navigate to the fault log and clear active alarms. Never reset without investigating the cause.

Where can I find Alfa Laval service manuals and documentation?

Official Alfa Laval service manuals are available through authorised distributors and the Alfa Laval technical support portal. AskWhiz provides instant AI-powered access to Alfa Laval troubleshooting information via WhatsApp — no manual hunting required.

Refrigeration

Alfa Laval error codes, decoded.

Look up any Alfa Laval fault code below. Each one is grounded in Alfa Laval's own service documentation — the meaning, the symptoms, the causes, and the steps to clear it.

By Octavian Ghindea

Co-founder & CTO · Reviewed August 2026

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Alfa Laval sits in our Refrigeration coverage. Every page here is transcribed from the manufacturer's manuals, not scraped from forums.

What error codes does Alfa Laval display?

Tap a code for the full breakdown — meaning, symptoms, causes, and fix steps.

Compressor overload — check motor current draw

Low pressure fault — check evaporator and expansion valve

Communication fault — check wiring and addresses

High pressure fault — check condenser and refrigerant charge

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Common questions about Alfa Laval equipment

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