Mars Comfort-Aire Century VCD-SA Series Service Manual page 28

10.2 Micro-Switch Introduce:
A. Micro-switch S1 and dial-switch S2 are for address setting when you want to control this unit by a central controller.
Range: 00-63
B. Dial-switch ENC1: The indoor PCB is universal designed for whole series units from 7K to 68K. This ENC1 setting will
tell the main program what size the unit is.
NOTE: Usually there is glue on it because the switch position cannot be changed at random unless you want to use this
PCB as a spare part to use in another unit. Then you have to select the right position to match the size of the unit.
"53" means 5.3kW (18K),"105" means 10.5kW(36K), and so on.
24V THERMOSTATS SETTING
CODE
FACTORY
SETTI
C. Function DIP Switch Settings
Dial code
Electric heating turns on outdoor T4
S3(ENC 2)
temperature
SW1-1 Whether 24V control selection
SW1-2 Cold wind protection option
Single cooling / heating and cooling
SW1-3
options
Set machine/single internal machine
SW1-4
selection
FOR SETTING NETADDRESS
0
S1+S2
8
CODE 0~F
0~15
NETADDRESS
F A C T O R Y S E T T I N G
0 0
ENC1
8 8
CODE 4 5
POWER 53 54~71
ACCORDING TO RELATED MODEL.
0 ON
SW1
S3 SW2
1 2 3 4
8
0~F ON~OFF
Features
0 0
ON ON
1 2 1 2
8 8
0~F 0~F
16~31
0 0 0
8 8 8
9
7 8
72~90 91~105 106~140 141~160
ON ON
SW3 SW4
1 2 3 4 1 2 3 4
ON~OFF
ON~OFF ON~OFF
ON
0 means that the temperature protection is not turned
on, 1-F is -20-8°C (-4-46°F) respectively, and each scale
represents 2°C(3.6°F)
Yes
No
Cooling
Indoor unit
Service Manual - VCDxxSA
0
ON ON
1 2 1 2
8
0~F
32~47 48~63
0 0
8 8
A B
161
ON
ON
S4
1 2 3 4
1 2
ON~OFF
OFF(default)
No
Yes
heating and cooling
Kit