¿Cómo se corrige el código de falla 4 de MHI?

1. Check if the stop valves are fully open. 2. Verify that the unit is filled with the specified amount of refrigerant. 3. Ensure the connectors (TH4, LEV-A, and LEV-B) on the outdoor controller board are securely connected and not disconnected.

OPERATION INDICATOR lamp blinks 4 times (Pattern A) - Abnormal high discharging temperature / Insufficient refrigerant

MHI · Air Conditioning

¿Qué significa 4 ?

The OPERATION INDICATOR lamp blinks four times in 'Output pattern A' from the indoor unit. This points to either an abnormally high discharge temperature or insufficient refrigerant in the system.

Causas comunes

Abnormal high discharging temperature.
Insufficient refrigerant in the system.

Pasos de reparación & Lista de verificación

Haga clic en los pasos para seguir su progreso.

1
Check if the stop valves are fully open.
2
Verify that the unit is filled with the specified amount of refrigerant.
3
Ensure the connectors (TH4, LEV-A, and LEV-B) on the outdoor controller board are securely connected and not disconnected.

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 open 1OPERATION 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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