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Midea V6R VRF Series

Midea V6R VRF Series
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Commercial Air Conditioners
R410A
Service
Manual
MV6-R252WV2RN1
MV6-R280WV2RN1
MV6-R335WV2RN1
MV6-R400WV2RN1
MV6-R450WV2RN1
MV6-R500WV2RN1
Series VRF

Table of Contents

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Midea V6R VRF Series Specifications

General IconGeneral
TypeVRF (Variable Refrigerant Flow)
RefrigerantR410A
DC Inverter CompressorYes
Energy Efficiency Ratio (EER)Up to 4.0 (Varies by model)
Indoor Unit Noise Level26-45 dB(A) (Varies by indoor unit type and model)
Operating Temperature Range (Cooling)-5°C to 48°C
Control SystemCentralized Controller, Individual Controllers, BMS Integration
CommunicationMODBUS
Indoor Unit TypesCassette, wall-mounted, ducted, ceiling-concealed, floor-standing
Outdoor Unit Dimensions (Varies by Model)Varies significantly by model. Refer to specific model documentation.
Indoor Unit Dimensions (Varies by Model)Varies significantly by model and type. Refer to specific model documentation.

Summary

Part 1 General Information

1 Indoor and Outdoor Unit Capacities

Details capacities and types of VRF indoor and outdoor units, including capacity ranges.

2 External Appearance

Visual representations and descriptions of various indoor and outdoor unit types.

3 Outdoor Unit Combinations

Explains factory-recommended combinations of outdoor units based on system capacity.

4 Combination Ratio

Outlines limitations and rules for indoor and outdoor unit combination ratios.

Part 2 Component Layout and Refrigerant Circuits

1 Layout of Functional Components

Illustrates the location of key functional components within the outdoor units.

2 Piping Diagrams

Presents detailed piping diagrams for different outdoor unit models.

3 Refrigerant Flow Diagrams

Illustrates refrigerant flow during various operating modes like cooling and heating.

Part 3 Control

1 General Control Scheme Flowchart

Provides a flowchart detailing the activation logic of various system controls.

2 Stop Operation

Explains the conditions and component controls during system stop operations.

3 Standby Control

Details the crankcase heater control function during standby mode.

4 Startup Control

Describes the startup sequence and compressor startup delay control procedures.

5 Normal Operation Control

Details component control during normal cooling, heating, and simultaneous operations.

6 Protection Control

Explains various protection mechanisms like high pressure, low pressure, and temperature controls.

7 Special Control

Covers special control functions like oil return and defrosting operations.

8 Other Control

Details other control modes such as overload, pump-down, and snow-blowing control.

Part 4 Field Settings

1 Outdoor Unit Field Settings

Explains the function of PCB switches and their settings for outdoor unit configuration.

2 Mode Selection Box Field Settings

Details the switch settings for MS01 and MS04-12 mode selection boxes.

Part 5 Electrical Components and Wiring Diagrams

1 Outdoor Unit Electric Control Box Layout

Shows the layout and components within the outdoor unit's electric control box.

2 Outdoor Unit Main PCB

Identifies ports and components on the outdoor unit's main PCB.

3 Data Transfer Module

Describes the layout, components, and functions of the data transfer module.

4 Compressor Inverter Module

Details the ports and LED indicators of the compressor inverter module.

5 Fan Module

Shows the ports and connections for the fan module.

6 Mode Selection Box Main PCB

Identifies ports and switches on the MS01 and MS04-12 main PCBs.

7 Wiring Diagrams

Provides detailed wiring diagrams for outdoor units and MS boxes.

Part 6 Diagnosis and Troubleshooting

1 Error Code Table

Lists all error codes, their content, remarks, and manual restart requirements.

2 Troubleshooting for Outdoor Unit

Provides step-by-step troubleshooting procedures for common outdoor unit errors.

3 Troubleshooting for Mode Selection Box

Offers troubleshooting steps for errors related to the Mode Selection Box.

4 Appendix to Part 6

Contains reference data such as temperature sensor resistance and pressure sensor voltage characteristics.

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