McQuay MDS 100B

Service Manual SM-MDS_(ii) 19
MDOM PCB
For MDOM PCB, the communication terminals are already wired from the PCB to terminal
block. Connect the wire accordingly (A
in
outdoor to A
in
indoor, B
in
outdoor to B
in
indoor) on the
green color connector on indoor PCB.
MDS-M PCB
For MDS-M PCB, the communication terminals are also wired from the PCB to terminal block.
Current models are having the label of A
in
and B
in
on the terminal block. However, older model
has different terminal number (as shown below). Connect the wire accordingly (A
in
outdoor to
A
in
indoor, B
in
outdoor to B
in
indoor) on the green color connector on indoor PCB.
R22 Model
Terminal Number for A
in
Terminal Number for B
in
MDS080/100/120/150B/BR
30
31
MDS180/200/220/240B/BR
45
46
R410A Model
Terminal Number for A
in
Terminal Number for B
in
5MDS080/100/120/140/160/180B/BR
30
31
5MDS200/220/240B/BR
45
46
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