Lennox MPB036S4M - Service Manual

1
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

Lennox MPB036S4M Specifications

General

Brand	Lennox
Model	MPB036S4M
Category	Air Conditioner
Language	English

Summary

Safety and Warnings

General Safety Warning

Crucial safety information regarding installation, adjustment, and maintenance.

Outdoor Unit Specifications and Identification

Model Number Identification

Explains the coding system used in outdoor unit model numbers for Lennox mini-split systems.

Single-Zone Unit Specifications

Multi-Zone Unit Specifications

Indoor Unit Specifications

M22 A, M33 A, M33 B Cassette Units

MMDA Ducted Units

MWMA;MWMB Wall Mounted Units

MCFA;MCFB Ceiling;Floor Units

System Combinations and Piping

Multi-Zone System Combinations

Lists valid indoor/outdoor unit combinations and their capacities for multi-zone systems.

Outdoor Unit Connections and Line Sets

Wiring Diagrams

Power Wiring Diagrams

Illustrates power wiring for outdoor and indoor units, including multi-zone configurations.

Outdoor Unit Wiring Diagrams

Indoor Unit Wiring Diagrams

Operational Procedures

Start-Up Procedures

Covers adding refrigerant for single and multi-zone systems and performing spot checks.

Troubleshooting and Error Codes

Quick Reference Guide - Error Codes

Lists and describes error codes for single-zone and multi-zone outdoor units, and indoor units.

Troubleshooting Outdoor Unit Errors

Provides troubleshooting steps for common outdoor unit error codes like E0, E2, E3, E4, E5, E6, E8.

Troubleshooting Indoor Unit Errors

Offers troubleshooting steps for indoor unit error codes such as CP, E0, E1, E3, E4, E5, EC, EE, F0-F6.

Component Diagnostics and Protection

Temperature Sensor Data

Component Troubleshooting Checks

Details diagnostic checks for key components like compressors, IPMs, fans, and sensors.

Component Protection Functions