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RUN light ON 1-time flash

RUN light ON, 1-time flash — Power transistor error

MHI · Air Conditioning

¿Qué significa RUN light ON 1-time flash ?

The RUN light is on and flashes once, indicating an error with the power transistor. This component is crucial for controlling power to the compressor and other parts of the outdoor unit.

Causas comunes

  • Broken power transistor
  • Broken compressor wire
  • Defective outdoor unit boards
  • Shortcircuit on power transistor

Pasos de reparación & Lista de verificación

Haga clic en los pasos para seguir su progreso.

  1. 1

    Turn off the air conditioner at the main power source and wait for at least 30 seconds before turning it back on.

  2. 2

    Check the outdoor unit for any obvious signs of electrical damage or burnt smells.

  3. 3

    Ensure the outdoor unit's power supply is stable and not experiencing fluctuations.

  4. 4

    If the issue reoccurs, switch off the unit's power and contact your dealer for professional assistance.

  5. 5

    Verify that the outdoor unit's ventilation is not blocked, ensuring proper cooling of internal components.

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

Fallas relacionadas

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
Fuente: MHI Air Conditioning
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