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5311

Alarm Z1 Too high discharge gas temperature — Persistent high discharge gas temperature

Bosch · Alarm List A/W Split (8754) 2018 01 10

¿Qué significa 5311 ?

This alarm triggers after 3 warnings (code 5310) within 3 hours, or if the high discharge gas temperature condition persists for over 30 minutes.

Causas comunes

  • Defective discharge temperature sensor TR6.
  • Suction gas overheating is too high.
  • The electronic expansion valve is not regulating properly.
  • Lack of refrigerant (insufficient filling or leak).

Pasos de reparación & Lista de verificación

Haga clic en los pasos para seguir su progreso.

  1. 1

    Measure the actual discharge temperature with a thermometer and compare it to the value displayed by TR6.

  2. 2

    Check the readings of sensors TR5 and JR0 against external measurements and refrigerant pressure.

  3. 3

    Test the electronic expansion valve's operation by manually adjusting its position.

  4. 4

    Search for refrigerant leaks and repair if found. Refill refrigerant to the correct level.

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

Fallas relacionadas

1001 / A21/A22/A23/A24Alarm A21/A22/A23/A24 — No communication between system controller and remote control1010 / A11Alarm A11 — No communication via EMS BUS connection1037Alarm 1037 — Outdoor temperature sensor faulty, heating standby mode active
Fuente: Alarm List A/W Split (8754) 2018 01 10
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