Código H7: Number of indoor units detected by master unit not same as number set on main PCB
Descripción del problema y advertencia de seguridad
El Trane TVR Pro VRF (220V) ha desencadenado una alarma crítica Number of indoor units detected by master unit not same as number set on main PCB. Se requiere la atención inmediata de un operador calificado o técnico de mantenimiento para evitar daños secundarios al equipo o piezas estropeadas durante el ciclo de fabricación. Asegúrese siempre de seguir los procedimientos de seguridad estándar y LOTO antes de acceder a los armarios eléctricos.
Pasos oficiales de solución de problemas
Manual restart required: No Display: Only displayed on the master unit Description: Number of indoor units detected by master unit not same as number set on main PCB. All units stop running. Error code is only displayed on the master unit. Trigger condition: Only one indoor unit cannot be detected by master unit for 8 hours or more than one indoor unit cannot be detected by master unit for 3 minutes. Recover condition: Number of indoor units detected by master unit is same as number set on main PCB. Reset method: Resume automatically. Possible causes: - Number of indoor units set on main PCB not same as actual number of indoor units. - Some indoor units are powered off. - Communication wires between indoor and outdoor units not connected properly. - Indoor unit PCB damaged. - Indoor unit without address or indoor unit address duplicated. - Main PCB damaged.
Source: Trane 220V TVR Pro VRF Service Manual — Part 6 Diagnosis and Troubleshooting
Last reviewed: 2026-07-01 · Verified against the manufacturer’s official documentation.
Acerca de las alarmas de Trane TVR Pro VRF (220V)
Los controladores industriales construidos por Trane están diseñados con amplios sistemas de diagnóstico para proteger los circuitos internos y los enlaces mecánicos. Cuando un TVR Pro VRF (220V) arroja un código de error como H7, generalmente indica un desajuste entre los valores ordenados y la retroalimentación real del sensor.
Lista completa de alarmas: 38 Trane TVR Pro VRF (220V) códigos.
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