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Lennox MLA030S4M Service Manual

Lennox MLA030S4M
168 pages
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MINI-SPLIT SYSTEMS SERVICE MANUAL
CORP1602-L9
3/2017
Supersedes 10/2016
WARNING
Improper installation, adjustment, alteration, service or maintenance can cause property damage, personal injury or loss
of life.
Installation and service must be performed by a licensed professional HVAC installer (or equivalent) or service agency

Table of Contents

Questions and Answers:

Lennox MLA030S4M Specifications

General IconGeneral
BrandLennox
ModelMLA030S4M
CategoryAir Conditioner
LanguageEnglish

Summary

Single and Multiple Zone Outdoor Units

Model Number Identification

Explains the structure and meaning of outdoor unit model numbers.

MPA Single-Zone Specifications Outdoor Units (0.75 - 1.5 Ton)

Provides detailed specifications for MPA single-zone outdoor units in the 0.75-1.5 ton range.

MPA Single-Zone Specifications Outdoor Units (2.0 - 4.0 Ton)

Details specifications for MPA single-zone outdoor units from 2.0 to 4.0 tons.

MPB Single-Zone Specifications Outdoor Units (0.75 - 1.5 Ton)

Lists specifications for MPB single-zone outdoor units, 0.75 to 1.5 tons.

MPB Single-Zone Specifications Outdoor Units (2 - 4 Ton)

Provides specifications for MPB single-zone outdoor units in the 2 to 4 ton capacity range.

MLA Single-Zone Specifications Outdoor Units (0.75 - 2 Ton)

Outlines specifications for MLA single-zone outdoor units, covering 0.75 to 2 tons.

MPA Multi-Zone Specifications Outdoor Units (1.5 - 2.5 Ton)

Details specifications for MPA multi-zone outdoor units, 1.5 to 2.5 tons.

MPA Multi-Zone Specifications Outdoor Units (3 - 4 Ton)

Provides specifications for MPA multi-zone outdoor units from 3 to 4 tons.

MPB Multi-Zone Specifications Outdoor Units (1.5 - 2.5 Ton)

Lists specifications for MPB multi-zone outdoor units, 1.5 to 2.5 tons.

MPB Multi-Zone Specifications Outdoor Units (3 - 4 Ton)

Outlines specifications for MPB multi-zone outdoor units, 3 to 4 tons.

Outdoor Unit Clearances

Specifies required clearance distances for outdoor unit installation.

M22A, M33A and M33B Cassette Non-Ducted Indoor Units

M22A, M33A and M33B Indoor Unit Clearances

Specifies required clearance for M22A, M33A, and M33B indoor units.

MMDA Ducted Indoor Units

MWMA and MWMB Wall Mounted Indoor Units

MCFA and MCFB Ceiling / Floor Indoor Units

Indoor Unit Clearances

Specifies required clearances for MCFA and MCFB indoor units.

Indoor / Outdoor Unit Combinations

Refrigeration Pipe Work

Single-Zone Piping Limitations

Specifies limitations for single-zone refrigerant piping installations.

Multi-Zone Piping Limitations

Details limitations for multi-zone refrigerant piping installations.

Condensate Pipe Work Installation

Controls

Start-Up

Adding Refrigerant - Single-Zone Systems

Details how to add refrigerant to single-zone systems.

Adding Refrigerant - Multi-Zone Systems

Explains how to add refrigerant to multi-zone systems.

Quick Reference Guide - Error Codes

Troubleshooting Outdoor Unit Error Codes

Indoor Unit Indicators and Controls

Troubleshooting Indoor Unit Error Codes

Component Troubleshooting

Compressor Check

Details how to check the compressor windings resistance.

IPM Check

Explains how to measure the resistance of the IPM module.

AC Fan Motor

Guides on measuring AC fan motor winding resistance.

Four-Way Valve

Provides steps to test the four-way valve by measuring voltage and resistance.

EXV Check

Outlines the procedure for checking the EXV (Electronic Expansion Valve).

Component Protection

Specifications and Operations

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