McQuay MDS 100B User Manual

Service Manual SM-MDS_(ii) 49
Dipswitch 2
(SW2)
1 2 3 4 5 6
ON (1)
OFF (0)
Address
S2
1 2 3 4 5 6
ON (1)
OFF (0)
Address
S2
Dipswitch 2 is for address setting. Each indoor unit within the same outdoor unit must have
different address. The table below shows the indoor address setting.
S2.1 S2.2 S2.3 S2.4 S2.5 S2.6 Indoor Address S2.1 S2.2 S2.3 S2.4 S2.5 S2.6 Indoor Address
0 0 0 0 0 0 0 0 1 1 0 0 0 24
0 0 0 0 0 1 1 0 1 1 0 0 1 25
0 0 0 0 1 0 2 0 1 1 0 1 0 26
0 0 0 0 1 1 3 0 1 1 0 1 1 27
0 0 0 1 0 0 4 0 1 1 1 0 0 28
0 0 0 1 0 1 5 0 1 1 1 0 1 29
0 0 0 1 1 0 6 0 1 1 1 1 0 30
0 0 0 1 1 1 7 0 1 1 1 1 1 31
0 0 1 0 0 0 8 1 0 0 0 0 0 32
0 0 1 0 0 1 9 1 0 0 0 0 1 33
0 0 1 0 1 0 10 1 0 0 0 1 0 34
0 0 1 0 1 1 11 1 0 0 0 1 1 35
0 0 1 1 0 0 12 1 0 0 1 0 0 36
0 0 1 1 0 1 13 1 0 0 1 0 1 37
0 0 1 1 1 0 14 1 0 0 1 1 0 38
0 0 1 1 1 1 15 1 0 0 1 1 1 39
0 1 0 0 0 0 16 1 0 1 0 0 0 40
0 1 0 0 0 1 17 1 0 1 0 0 1 41
0 1 0 0 1 0 18 1 0 1 0 1 0 42
0 1 0 0 1 1 19 1 0 1 0 1 1 43
0 1 0 1 0 0 20 1 0 1 1 0 0 44
0 1 0 1 0 1 21 1 0 1 1 0 1 45
0 1 0 1 1 0 22 1 0 1 1 1 0 46
0 1 0 1 1 1 23 1 0 1 1 1 1 47
While setting the indoor address, there are a few rules need to follow. The rules are as follow:
a) Each indoor address must be unique and it must not duplicate within a system.
b) The first indoor address must be 0. Do not start the first indoor with address 1.
c) While setting the indoor address, the indoor address number cannot skip. For example, if
there are only 4 indoors in a system, the indoor address needs to be 0, 1, 2 and 3.
d) It is advisable that the indoor address follows the sequence of the communication wiring.
For example, for a 4 indoors in the system, the first indoor after the outdoor should have
address 0, the next indoor address should be 1 and the last indoor of the communication
wiring should be 3.
Example:
Indoor 1
A
B
Indoor 1
A
B
Outdoor
A B
Outdoor
A B
Indoor 2
A
B
Indoor 2
A
B
Indoor 3
A
B
Indoor 3
A
B
Indoor 4
A
B
Indoor 4
A
B
Address: 0
Address: 1
Address: 2
Address: 3
(1) ON
(0) OFF
S2.1 S2.6
(1) ON
(0) OFF
S2.1 S2.6
(1) ON
(0) OFF
S2.1 S2.6
(1) ON
(0) OFF
S2.1 S2.6
(1) ON
(0) OFF
S2.1 S2.6
(1) ON
(0) OFF
S2.1 S2.6
(1) ON
(0) OFF
S2.1 S2.6
(1) ON
(0) OFF
S2.1 S2.6
5

McQuay MDS 100B Specifications

General

Brand	McQuay
Model	MDS 100B
Category	Compressor
Language	English

Summary

2.0 System and Control

2.1 MDS Outdoor System and Control

2.2 MDS Indoor System and Control

3.0 PCB & Wiring

3.1 MDS Outdoor Unit PCB

Identifies components and connectors on MDOM and MDS-M outdoor PCBs.

3.2 MDS Indoor Unit PCB

Details components and connections for MC200-C and MC201-C indoor PCBs.

3.3 MDS System Wiring

Covers wiring between outdoor-indoor, outdoor-outdoor, and master-slave units using RS485.

4.0 Commissioning Software

4.3 Installation of Smart Commander

4.4 Wiring Connection

Details wiring connections between the MC501 gateway and outdoor units/computer.

4.5 Setup of Smart Commander

Guides through setting up the communication port (COM) for the Smart Commander.

4.6 Smart Commander Software Interface

Explains the Circuit Monitor and Server Monitor windows for system monitoring.

5.0 Commissioning

5.1 Obtain Design Drawing and Report

5.2 Check Piping Routing, Wiring Routing & Connection

5.3 Add in additional refrigerant

Explains methods for calculating and adding refrigerant based on design or manual calculation.

5.4 Confirm Indoor Dipswitch Setting

Guides on setting indoor unit type, capacity, address, and function via dipswitches.

5.7 Power Up Outdoor

5.6 Confirm Outdoor Dipswitch Setting

Covers setting up MDOM and MDS-M outdoor PCBs, including capacity and address.

5.8 Start All Indoors

5.9 Monitor Outdoor Parameter

6.0 Troubleshooting

6.1 Locating Error Code

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

6.2 Error Code for Decorative Type Indoor

Lists error codes and possible causes for decorative indoor units.

6.4 Outdoor Error Code for MDOM PCB

Lists error codes for MDOM PCB and their potential causes.

6.3 Indoor Error Code for Wired Controller MC301

Details error codes specific to wired controller MC301 and their causes.

6.5 Outdoor Error Code for MDS-M PCB

Lists error codes for MDS-M PCB and their potential causes.

6.6 Troubleshooting Flow Chart

Provides flowcharts for diagnosing common sensor, pressure, and communication errors.