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RUN light blink (1.5s ON, 0.5s OFF)

RUN light blinks (1.5 seconds ON, 0.5 seconds OFF) — Airflow stopped to prevent cold air in heating operation

MHI · Air Conditioning

¿Qué significa RUN light blink (1.5s ON, 0.5s OFF) ?

During heating operation, the green RUN light on the indoor unit will blink with a pattern of 1.5 seconds ON and 0.5 seconds OFF. This indicates that the airflow is temporarily stopped to prevent cold air from blowing out.

Causas comunes

  • Unit is in heating mode and temporarily stopping airflow to prevent cold drafts.
  • Normal operation characteristic during heating to optimize comfort.

Pasos de reparación & Lista de verificación

Haga clic en los pasos para seguir su progreso.

  1. 1

    Allow the unit to continue heating operation; this is normal behavior.

  2. 2

    Do not switch off the unit, as it is managing its internal temperature.

  3. 3

    If the issue persists or heating performance is poor, ensure filters are clean.

Ver todos los códigos en este manual (124)
Datos técnicos verificados. Última actualización: April 2026

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Fuente: MHI Air Conditioning
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