Power Up Outdoor - McQuay MDS Series Service Manual

Set up
Dipswitch 3
(S3)
For Dipswitch S3, the main function is to determine the MDS-B series outdoor capacity. Besides
this dipswitch, dipswitch S2.3 is also interrelated. The setting of the capacity is as follow:

5.7 Power Up Outdoor

After the outdoor unit setting has completed, we may power up the outdoor unit to see if the wiring connection is
correct. If the commissioning software (Smart Commander) is available, it is advisable to use it to run the
commissioning. Connect the outdoor unit to the commissioning software accordingly (refer to Section 4.4) and
run it. Go to drop down menu Function (E) and select Initiating to connect to the MDS system. Once the
software is connected to the system, all available parameter of the system (Indoor and Outdoor) will be visible.
By using the software, check whether all indoor and outdoor units are connected. Besides that, the capacity and
model of all indoor and outdoor units are verified. If there's any problem such as communication error and etc,
kindly recheck the wiring of the communication cable and the setting of PCB. Error code will be recorded and
shown in the software itself.
Service Manual SM-MDS_(ii)
S3 S3
ON ON (1) (1)
OFF (0) OFF (0)
1 2 3 4 1 2 3 4
Outdoor unit capacity Outdoor unit capacity
5
57