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439

Error 439 - Refrigerant leakage detected

Samsung · Home Automation

What does 439 mean?

The system has detected a refrigerant leak, which can lead to reduced performance, increased energy consumption, and potential damage if not addressed.

Common Causes

  • Pinhole leaks in refrigerant piping
  • Loose or poorly sealed connections
  • Faulty seals or components

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Visually inspect refrigerant lines and connections (often near the outdoor unit) for any oily residue, which can indicate a leak.

  2. 2

    If a leak is suspected, turn off the unit immediately.

  3. 3

    Contact a qualified technician for professional leak detection, repair, and proper recharging of the system.

Browse all codes in this manual (60)
Verified technical data. Last updated: April 2026

Related Faults

101Error 101 - Indoor unit communication error102Error 102 - Indoor/Outdoor unit communication error108Error 108 - Repeated address setting
Source: Samsung Home Automation
Open Manual (Page 24)Search more codes in this manual