McQuay MDS 240B

Service Manual
SM-MDS_(ii)
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Engineered for flexibility and performance
TM

McQuay MDS 240B Specifications

General

Brand	McQuay
Model	MDS 240B
Category	Compressor
Language	English

Summary

Introduction to MDS Systems

Digital Scroll Compressor Technology

Explains the digital scroll compressor technology used in MDS systems.

System and Control Overview

MDS Outdoor System and Control

MDS Indoor System and Control

PCB and Wiring Guide

MDS Outdoor Unit PCB

Details the MDOM PCB and MDS-M PCB, including component locations and remarks.

MDS Indoor Unit PCB

MDS System Wiring

Explains wiring connections between outdoor and indoor units, and master/slave units.

Commissioning Software Guide

Smart Commander Installation

Smart Commander Setup Procedure

Commissioning Procedures

Check Piping and Wiring Connections

Adding Refrigerant Charge

Describes methods for calculating and adding the required refrigerant charge.

Indoor Dipswitch Setting Confirmation

Outdoor Dipswitch Setting Confirmation

Troubleshooting Guide

Locating Error Codes

Explains where and how error codes are displayed on indoor and outdoor units.

Error Codes for Decorative Indoor Units

Lists error codes, descriptions, and possible causes for decorative indoor units.

Troubleshooting Flow Charts

Provides flow charts for troubleshooting sensor failures and other common issues.