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UF

Outdoor Board LED1 (green) blinks three times and LED2 (red) blinks six times alternately - Abnormality of outdoor fan motor rotational speed

MHI · Air Conditioning

¿Qué significa UF ?

During startup or operation, the outdoor unit's LED1 (green) blinks three times and LED2 (red) blinks six times alternately, indicating an abnormality in the rotational speed of the outdoor fan motor.

Causas comunes

  • Outdoor fan motor rotational speed abnormality.
  • Obstruction to the outdoor fan.
  • Faulty fan motor or control circuit.

Pasos de reparación & Lista de verificación

Haga clic en los pasos para seguir su progreso.

  1. 1

    Check for looseness, disconnection, or incorrect connection of the compressor wiring.

  2. 2

    Measure resistance values among terminals on the compressor using a tester.

  3. 3

    Check if the outdoor unit has a short cycle on its air duct, impeding fan performance.

  4. 4

    Inspect the outdoor fan motor for correct operation and clear any obstructions.

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
Open Manual (Page 60)Buscar más códigos en este manual