What does Friedrich error code LP mean?

Error code LP on Friedrich equipment indicates low pressure fault — check evaporator and expansion valve. Refer to the Friedrich service manual for specific diagnostic steps and safety precautions before troubleshooting.

How do I reset a Friedrich unit after a fault?

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

Where can I find Friedrich service manuals and documentation?

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

Refrigeration

Friedrich error codes, decoded.

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

What error codes does Friedrich display?

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

Low pressure fault — check evaporator and expansion valve

Oil failure — check oil level and pump pressure

Communication fault — check wiring and addresses

Compressor overload — check motor current draw

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Common questions about Friedrich equipment

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