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E463

E463 — OLP Overheating and Compressor Shutdown

Samsung · Air Conditioning

What does E463 mean?

This error indicates that the OLP (Overload Protection) has detected overheating, causing the compressor to stop. This often relates to issues with refrigerant flow or cooling of components.

Common Causes

  • Sub-valve opening issues.
  • Insufficient amount of cooling water (if applicable to your system).
  • Faulty OLP sensor.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Turn off the air conditioner at the main power switch or circuit breaker and wait 30 seconds.

  2. 2

    Ensure the outdoor unit has clear airflow and is free from any obstructions or debris.

  3. 3

    Turn the power back on.

  4. 4

    If the error persists, contact customer support, as a technician will need to check internal components like valves and sensors.

Browse all codes in this manual (94)
Verified technical data. Last updated: April 2026

Related Faults

COND temperature sensor errorCondenser temperature sensor error — Outdoor coil temperature sensor faultCommunication errorCommunication error — Indoor/outdoor inverter main MICOM communication lostCommunication error after trackingCommunication error after finishing tracking — System communication issue following a tracking process
Source: Samsung Air Conditioning
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