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E464

E464 — IPM Over-Current Error

Samsung · Air Conditioning

What does E464 mean?

This error indicates that the Intelligent Power Module (IPM) has detected an excessive electrical current, which triggers a protective shutdown to prevent damage to components.

Common Causes

  • Short circuit in the system.
  • Faulty IPM or inverter component.
  • Power surge.

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

    Check your home's main electrical panel for any tripped breakers and reset them if found.

  3. 3

    Turn the air conditioner power back on.

  4. 4

    If the error persists, contact customer support immediately, as this indicates a serious electrical fault requiring professional attention.

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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