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Mars Comfort-Aire VMH Series User Manual

Mars Comfort-Aire VMH Series
164 pages
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www.marsdelivers.com
Service Manual
VMH Series
Inverter Multi Zone Ductless Mini-Split
Model
A-VMH18DU-1
A-VMH28TU-1
A-VMH36QU-1
A-VMH48PU-1
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Mars Comfort-Aire VMH Series Specifications

General IconGeneral
BrandMars
ModelComfort-Aire VMH Series
CategoryAir Conditioner
LanguageEnglish

Summary

Indoor Unit Combinations

Outdoor Unit Dimensions

Refrigerant Cycle Diagrams

Refrigeration Circuit for A-VMH18DU-1

Details the refrigeration circuit for model A-VMH18DU-1.

Refrigeration Circuit for A-VMH28TU-1

Outlines the refrigeration circuit for model A-VMH28TU-1.

Refrigeration Circuit for A-VMH36QU-1

Illustrates the refrigeration circuit for model A-VMH36QU-1.

Refrigeration Circuit for A-VMH48PU-1

Shows the refrigeration circuit for model A-VMH48PU-1.

Installation Procedures

Wrench Torque Specifications

Specifies torque values for installation fasteners.

Cable Connection Guidelines

Details on how to connect electrical cables for installation.

Piping Length and Elevation Limits

Guidelines on maximum piping length and height differences.

First-Time Installation Steps

Procedures and considerations for initial system setup.

Adding Refrigerant

Instructions for adding refrigerant after extended system operation.

Indoor Unit Refrigeration Servicing

Steps for servicing the indoor unit's refrigeration components.

Outdoor Unit Refrigeration Evacuation

Process for evacuating the outdoor unit's refrigeration system.

Electronic Functions and Protections

Abbreviations Glossary

Glossary of technical terms and abbreviations used in the manual.

Electric Control Environment Requirements

Specifies operating voltage and frequency requirements for control systems.

Main Protection Mechanisms

Details on the system's primary protection features.

Control and Functions Overview

Explains system control logic and operational functions.

Wiring Schematics

1-Drive-2 Outdoor Unit Wiring

Electrical wiring schematic for a 1-drive-2 outdoor unit.

1-Drive-3 Outdoor Unit Wiring

Wiring diagram for a 1-drive-3 outdoor unit configuration.

1-Drive-4 Outdoor Unit Wiring

Electrical wiring schematic for a 1-drive-4 outdoor unit.

1-Drive-5 Outdoor Unit Wiring

Wiring diagram for a 1-drive-5 outdoor unit setup.

Troubleshooting and Error Resolution

Safety Precautions for Troubleshooting

Essential safety precautions for troubleshooting procedures.

Indoor Unit Error Codes

Lists and explains error codes for indoor unit malfunctions.

Outdoor Unit Status Indicators

Information on outdoor unit status indicators and error codes.

Diagnosis and Solution Procedures

Guides for identifying and resolving system issues.

Disassembly and Component Removal

A-VMH18DU-1 (WCA30 Metal Plate) Disassembly

Step-by-step guide for disassembling the A-VMH18DU-1 model.

A-VMH18DU-1 (WX430 Metal Plate) Disassembly

Disassembly procedure for A-VMH18DU-1 (WX430 metal plate).

A-VMH36QU-1 (WD30 Metal Plate) Disassembly

Disassembly instructions for the A-VMH36QU-1 model.

A-VMH48PU-1 (WE30 Metal Plate) Disassembly

Disassembly guide for the A-VMH48PU-1 model.

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