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E43

E43 - Maximum number of indoor units connected exceeded

MHI · R410A Systems

¿Qué significa E43 ?

This error indicates that the number of indoor units connected to a single outdoor unit has exceeded the system's maximum allowable limit.

Causas comunes

  • Incorrect system design or installation with too many indoor units.
  • Accidental connection of additional indoor units.
  • Misconfiguration of the system.

Pasos de reparación & Lista de verificación

Haga clic en los pasos para seguir su progreso.

  1. 1

    Turn off the main power to the entire AC system at the circuit breaker.

  2. 2

    Consult your system's installation manual to determine the maximum number of indoor units supported by your outdoor unit model.

  3. 3

    If more units are connected than allowed, one or more units must be disconnected by a qualified technician.

  4. 4

    Restore power once the system configuration matches the specifications.

Ver todos los códigos en este manual (58)
Datos técnicos verificados. Última actualización: April 2026

Fallas relacionadas

E0E0 - Transmitting/receiving signal error in indoor unitE12E12 - Address setting conflict or auto address failureE14E14 - 3 flashes - Master/slave system wiring or SW settings error
Fuente: MHI R410A Systems
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