What does Hansen Technologies error code OF mean?

Error code OF on Hansen Technologies equipment indicates oil failure — check oil level and pump pressure. Refer to the Hansen Technologies service manual for specific diagnostic steps and safety precautions before troubleshooting.

How do I reset a Hansen Technologies unit after a fault?

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

Where can I find Hansen Technologies service manuals and documentation?

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

Refrigeration

Hansen Technologies error codes, decoded.

Look up any Hansen Technologies fault code below. Each one is grounded in Hansen Technologies'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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Hansen Technologies sits in our Refrigeration coverage. Every page here is transcribed from the manufacturer's manuals, not scraped from forums.

What error codes does Hansen Technologies display?

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

Oil failure — check oil level and pump pressure

Communication fault — check wiring and addresses

Compressor overload — check motor current draw

High discharge temperature — check superheat settings

Sensor fault — check temperature probe wiring

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Common questions about Hansen Technologies equipment

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