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33

3 flashes, 3 beeps - Discharge Pipe Temperature High (Conventional)

LG · Air Conditioning

What does 33 mean?

This fault code indicates that the discharge pipe temperature for a conventional compressor has exceeded 105°C. Similar to the inverter version, this usually relates to refrigerant or airflow problems.

Common Causes

  • Discharge pipe temperature (Conventional) > 105°C
  • Refrigerant issues
  • Airflow restrictions

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Turn off the unit and verify that the air intakes and exhausts for both indoor and outdoor units are clear of debris.

  2. 2

    Confirm that the system's refrigerant charge is correct.

  3. 3

    Power cycle the unit by turning it off for 1 minute.

  4. 4

    A technician should be consulted if the high temperature condition continues.

Browse all codes in this manual (97)
Verified technical data. Last updated: April 2026

Related Faults

01Error 01 - Indoor air sensor open or short circuit02Error 02 - Inlet pipe sensor open or short circuit03Error 03 - Communication error between indoor unit and wired remote
Source: LG Air Conditioning
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