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Outdoor control P.C. board LED repeats '3.6-second-OFF and 0.8-second-ON quick blinking'

Outdoor LED pattern: 3.6s OFF, 0.8s ON blink — Indoor/outdoor connecting wire fault

Mitsubishi Electric · Air Conditioning

Was bedeutet Outdoor control P.C. board LED repeats '3.6-second-OFF and 0.8-second-ON quick blinking' ?

The LED on the outdoor control P.C. board repeats a specific blinking pattern (3.6 seconds off, 0.8 seconds on). This pattern typically indicates an issue with the indoor/outdoor connecting wire.

Häufige Ursachen

  • Faulty indoor/outdoor connecting wire
  • Damage to the connecting wire
  • Poor connection at terminals

Reparaturschritte & Checkliste

Klicken Sie auf Schritte, um Ihren Fortschritt zu verfolgen.

  1. 1

    Turn off the power supply.

  2. 2

    Inspect the indoor/outdoor connecting wire for damage, kinks, or loose connections.

  3. 3

    Replace the indoor/outdoor connecting wire.

  4. 4

    Ensure the wire is correctly installed and terminated.

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 30)Mehr Codes in diesem Handbuch suchen