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Toyotomi MTN A371DV User Manual

Toyotomi MTN A371DV
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Service Manual
Model:
MTN MTG - A371DV
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Toyotomi MTN A371DV Specifications

General IconGeneral
TypeSplit System
Power Supply220-240V, 50Hz
RefrigerantR410A
Operating Temperature (Cooling)18°C to 43°C
Operating Temperature (Heating)-7°C to 24°C

Summary

1. Precaution

1.1 Safety Precaution

Essential safety guidelines to prevent injury and damage during operation and maintenance.

1.2 Warning

Critical warnings regarding installation, electrical safety, handling, and environmental considerations.

3. Dimension

3.1 Indoor Unit

Physical dimensions and specifications for the indoor unit, including width, depth, and height.

3.2 Outdoor Unit

Physical dimensions and installation space requirements for the outdoor unit.

5. Wiring Diagram

5.1 Indoor Unit

Electrical wiring schematic detailing connections for the indoor unit's components.

5.2 Outdoor Unit

Electrical wiring schematic detailing connections for the outdoor unit's components.

6 Installation Details

6.1 Wrench torque sheet for installation

Specifies torque values for various fasteners used during the installation process.

6.2 Connecting the cables

Guidelines for selecting appropriate power cables and ensuring secure connections.

6.3 Pipe length and the elevation

Details on refrigerant pipe sizing, maximum permissible length, and elevation differences.

6.4 Installation for the first time

Step-by-step procedures for the initial installation, including purging and evacuation.

6.5 Adding the refrigerant after running the system for many years

Procedure for safely recharging refrigerant into systems that have been in operation for extended periods.

6.6 Re-installation while the indoor unit need to be repaired

Steps for collecting refrigerant into the outdoor unit before indoor unit servicing.

6.7 Re-installation while the outdoor unit need to be repaired

Procedures for evacuation and refrigerant charging during outdoor unit repair or re-installation.

8. Electronic function

8.1 Abbreviation

Glossary of technical abbreviations used throughout the electronic function sections.

8.2 Display function

Explanation of icons and indicators shown on the indoor unit's display board.

8.3 Main Protection

Details on the unit's internal protection mechanisms, including compressor and fan safety features.

8.4 Operation Modes and Functions

Overview of various operating modes (Cooling, Heating, Auto, etc.) and system functions.

9. Troubleshooting

9.1 Indoor Unit Error Display

List of error codes displayed on the indoor unit and their corresponding LED status meanings.

9.2 Diagnosis and Solution

Step-by-step troubleshooting guides for common issues like EEPROM errors, communication failures, and sensor faults.

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