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E53

Suction Pipe Thermistor (Tho-S) Disconnected

Mitsubishi Electric · FR-D700 Inverter

¿Qué significa E53 ?

The suction pipe thermistor (Tho-S) is disconnected, which will prevent accurate temperature readings for the suction line. This compromises the system's ability to regulate superheat and optimize refrigerant flow.

Causas comunes

  • Disconnection of the suction pipe thermistor (Tho-S) wiring.
  • Open circuit fault in the suction pipe thermistor (Tho-S) sensor.
  • Faulty suction pipe thermistor (Tho-S) causing an out-of-range reading.

Pasos de reparación & Lista de verificación

Haga clic en los pasos para seguir su progreso.

  1. 1

    Inspect the suction pipe thermistor (Tho-S) and its connection for dislodgement or physical damage.

  2. 2

    Measure the resistance of the thermistor to verify functionality and compare to the specified temperature-resistance chart.

  3. 3

    Ensure the thermistor is correctly seated and secured on the suction pipe, making good thermal contact.

Ver todos los códigos en este manual (78)
Datos técnicos verificados. Última actualización: March 2026

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Fuente: Mitsubishi Electric FR-D700 Inverter