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Poor cooling or heating

Poor cooling or heating — Air conditioner not performing effectively

MHI · Air Conditioning

Was bedeutet Poor cooling or heating ?

The air conditioner is not providing sufficient cooling or heating to the room. This could be due to various factors affecting its performance or environment.

Häufige Ursachen

  • Doors or windows left open.
  • Too many people or a heat source in the room.
  • Clogged air filter.
  • Thermostat set at an unsuitable temperature.
  • Direct sunlight entering the room.

Reparaturschritte & Checkliste

Klicken Sie auf Schritte, um Ihren Fortschritt zu verfolgen.

  1. 1

    Check if all doors and windows in the room are closed.

  2. 2

    Ensure the air filter is clean and not clogged. Clean it if necessary.

  3. 3

    Adjust the thermostat to a suitable temperature setting.

  4. 4

    Block direct sunlight entering the room if it's affecting temperature.

  5. 5

    If the problem persists after these checks, switch off the power and contact your dealer.

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 25)Mehr Codes in diesem Handbuch suchen