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UH

Outdoor Board LED1 (green) blinks four times and LED2 (red) blinks one time alternately - Compressor overcurrent breaking

MHI · Air Conditioning

Was bedeutet UH ?

During startup or operation, the outdoor unit's LED1 (green) blinks four times and LED2 (red) blinks one time alternately, indicating that the compressor has stopped due to an overcurrent.

Häufige Ursachen

  • Compressor overcurrent breaking.
  • Faulty compressor.
  • Power supply instability.

Reparaturschritte & Checkliste

Klicken Sie auf Schritte, um Ihren Fortschritt zu verfolgen.

  1. 1

    Check for looseness, disconnection, or incorrect connection of the compressor wiring.

  2. 2

    Measure resistance values among terminals on the compressor using a tester.

  3. 3

    Check if the power supply voltage decreases during operation. Ensure stable power delivery.

  4. 4

    If the issue persists, a qualified technician should inspect the compressor.

Alle Codes in diesem Handbuch durchsuchen (124)
Verifizierte technische Daten. Zuletzt aktualisiert: April 2026

Verwandte Fehlercodes

00Outdoor Board LED only green lights up after startup - No outdoor unit of address 0 / Remote controller transmission wire open1OPERATION INDICATOR lamp blinks 1 time (Pattern A) - Indoor/outdoor unit communication error (Transmitting error - Outdoor unit)14OPERATION INDICATOR lamp blinks 14 times (Pattern A) - Other errors
Quelle: MHI Air Conditioning
Open Manual (Page 60)Mehr Codes in diesem Handbuch suchen