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5

OPERATION INDICATOR lamp blinks 5 times (Pattern A) - Abnormal high pressure / Overheating protection operation

MHI · Air Conditioning

Was bedeutet 5 ?

The OPERATION INDICATOR lamp blinks five times in 'Output pattern A' from the indoor unit. This signifies an abnormal high pressure situation or that the overheating protection has activated.

Häufige Ursachen

  • Abnormal high pressure (63H switch activated).
  • Overheating protection operation.

Reparaturschritte & Checkliste

Klicken Sie auf Schritte, um Ihren Fortschritt zu verfolgen.

  1. 1

    Check if indoor/outdoor units have a short cycle on their air ducts that could lead to overheating.

  2. 2

    Check if the heat exchanger and filter are clean and not dirty or clogged.

  3. 3

    Ensure the connector (63H) on the outdoor controller board is not disconnected.

  4. 4

    If the issue persists, consult a qualified technician to inspect the refrigerant system and pressure switches.

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 23)Mehr Codes in diesem Handbuch suchen