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C466

C466 - DC-Link voltage under/over error

Samsung · Air Conditioning

What does C466 mean?

The air conditioner has detected that the DC-Link voltage is either too low or too high, indicating a power supply or inverter issue.

Common Causes

  • Unstable power supply
  • Power surges
  • Faulty inverter component
  • Faulty main control board (PBA)

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Turn off the air conditioner at the main power supply, wait 5 minutes, then restart.

  2. 2

    Ensure the air conditioner is connected to a stable power source.

  3. 3

    Check for any external factors like power outages or brownouts.

  4. 4

    If the error continues, contact a qualified service technician.

Browse all codes in this manual (137)
Verified technical data. Last updated: April 2026

Related Faults

Abnormal displayAbnormal outdoor LED display - Error modeAll LEDs offAll outdoor unit LEDs off - No powerC101/C102C101 or C102 - Indoor to outdoor communication error
Source: Samsung Air Conditioning
Open Manual (Page 13)Search more codes in this manual