CodeRegistry
Marken
  1. Startseite
  2. Mitsubishi Electric
  3. Air Conditioning
  4. OPERATION INDICATOR lamp 3-second ON then blinks at 0.5-second interval
About·Privacy·Terms

CodeRegistry — Ihre globale Bibliothek für technische Lösungen.

Zu Ihrer Sicherheit: Befolgen Sie immer die offiziellen Herstellerhandbücher. CodeRegistry ist unabhängig und steht in keiner Verbindung zu den genannten Marken.

OPERATION INDICATOR lamp 3-second ON then blinks at 0.5-second interval

OPERATION INDICATOR lamp 3-second ON then blinks at 0.5-second interval — Outdoor unit is abnormal

Mitsubishi Electric · Air Conditioning

Was bedeutet OPERATION INDICATOR lamp 3-second ON then blinks at 0.5-second interval ?

The left lamp of the OPERATION INDICATOR on the indoor unit stays ON for 3 seconds (without a beep) before starting to blink at 0.5-second intervals. This specific pattern indicates an abnormality in the outdoor unit.

Häufige Ursachen

  • Abnormality detected in the outdoor unit.
  • An abnormal condition has occurred and is memorized in the system.

Reparaturschritte & Checkliste

Klicken Sie auf Schritte, um Ihren Fortschritt zu verfolgen.

  1. 1

    Note the blinking pattern of the OPERATION INDICATOR lamp.

  2. 2

    Refer to the outdoor unit failure mode recall function table (in the outdoor unit service manual) to identify the specific abnormal point.

  3. 3

    Ensure to check at least 2 consecutive blinking cycles to accurately identify the pattern.

Alle Codes in diesem Handbuch durchsuchen (170)
Verifizierte technische Daten. Zuletzt aktualisiert: April 2026

Verwandte Fehlercodes

0.5-second ON / 0.5-second OFF blinkUpper lamp blinks 0.5-second ON/OFF - Miswiring or serial signal error00Normal operation - No error codes1 beep during error display mode1 beep during error display mode - Unit has an error (different code)
Quelle: Mitsubishi Electric Air Conditioning
Open Manual (Page 21)Mehr Codes in diesem Handbuch suchen