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UL

Abnormal Low Pressure

Mitsubishi Electric · R410A Systems

¿Qué significa UL ?

The system has detected abnormally low refrigerant pressure. This typically indicates a refrigerant leak or insufficient charge, which can lead to poor cooling/heating performance and potential compressor damage.

Causas comunes

  • Abnormally low system pressure detected.
  • Refrigerant undercharge.
  • Restriction in the low-pressure side.

Pasos de reparación & Lista de verificación

Haga clic en los pasos para seguir su progreso.

  1. 1

    Measure system low-side pressure using manifold gauges.

  2. 2

    Perform a thorough leak detection test on the entire refrigerant circuit, starting from accessible joints and connections.

  3. 3

    Verify refrigerant charge level — if low, recover, evacuate, and recharge to the nameplate capacity.

Ver todos los códigos en este manual (60)
Datos técnicos verificados. Última actualización: March 2026

Fallas relacionadas

Fuente: Mitsubishi Electric R410A Systems