Mds Indoor Unit Pcb - McQuay MDS Series Service Manual

3.2 MDS Indoor Unit PCB

There are two types of PCB for MDS indoor unit, namely MC200-C and MC201-C.
MC200-C
3
Remark:
No
1
2
3
4
5
6
7
8
9
MC200-C PCB is only used by M(5)WMD 20/25G indoor unit. This PCB can be easily recognized by
identifying the chamfered edge on the top right corner. The figure above shows the locations for all
dipswitches, buttons, electrical connections and sensor connections.
16
12
NEUTRAL
LIVE
Dipswitch 1 (SW1)
Dipswitch 4 (SW4)
Dipswitch 2 (SW2)
Dipswitch 3 (SW3)
PCB Software Version
MC200-C
Swing
1
3
7
5
6
11
13 14
No
10 Fan Motor - HI FAN, MI FAN, LO FAN
11 T_IN - Inlet coil temperature
T_MID - Midlet coil temperature
T_OUT - Outlet coil temperature
12 A & B (Centralize Control)
pc pc
13 A & B (Outdoor Communication)
in in
14 T_Room - Room temperature
15 Display Board & IR Receiver
2
4
8
15
Service Manual SM-MDS_(ii)
9
10