Service Manual -
B-VMHxxAV-1
10.2
Micro-Switch Introduce:
0
8
4
1 2
3
5
6
7
C
9A
B
D
E
F
1 2
ON
0
8
4
1 2
3
5
6
7
C
9A
B
D
E
F
1 2
ON
0
8
4
1
2
3
5
6
7
C
9
A
B
D
E
F
1 2
ON
0
8
4
1 2
3
5
6
7
C
9A
B
D
E
F
1 2
ON
S1+S2
0~F
0~F
0~F
0~F
NETADDRESS
CODE
0~15
16~31
32~47
48~63
F A C T O R Y S E T T I N G
FOR SETTING NETADDRESS
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
0
8
4
1 2
3
56
7
C
9A
B
DE
F
0
8
4
1 2
3
56
7
C
9A
B
DE
F
0
8
4
1 2
3
56
7
C
9A
B
DE
F
0
8
4
1 2
3
56
7
C
9A
B
DE
F
0
8
4
1 2
3
56
7
C
9A
B
DE
F
0
8
4
1 2
3
56
7
C
9A
B
DE
F
0
8
4
1 2
3
56
7
C
9A
B
DE
F
ENC1
4
5
7
8
9
A
B
POWER
CODE
İ
53
54~71
72~90
91~105 106~140 141~160
ı
161
) $ & 7 2 5 <
6 ( 7 7 , 1 *
ACCORDING TO RELATED MODEL.
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.
0
8
4
1 2
3
5
67
C
9A
B
DE
F
0~F
ON~OFF
CODE
FACTORY
1 2 3
ON
4
SW1
1 2 3
ON
4
SW2
1 2 3
ON
4
SW3
S3
1 2 3
ON
4
SW4
1 2
ON
S4
24V THERMOSTATS SETTING
SETTI
1*
ON~OFF
ON~OFF
ON~OFF
ON~OFF
C. Function DIP Switch Settings
Dial code
Features
ON
OFF(default)
S3(ENC 2)
Electric heating turns on outdoor T4
temperature
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)
SW1-1
Whether 24V control selection
Yes
No
SW1-2
Cold wind protection option
No
Yes
SW1-3
Single cooling / heating and cooling
options
Cooling
heating and cooling
SW1-4
Set machine/single internal machine
selection
Indoor unit
Kit
Summary of Contents for Comfort-Aire Century A-VMH18SV-1
Page 30: ...Service Manual B VMHxxAV 1 ...
Page 37: ...Service Manual B VMHxxAV 1 Outdoor Unit 3 3 Panel Plate X430 Square grille ...
Page 38: ...Service Manual B VMHxxAV 1 Outdoor Unit 4 4 Panel Plate D30 Square grille ...
Page 39: ...Service Manual B VMHxxAV 1 Outdoor Unit 5 5 2 Service Place Minimim 4 Recommended 12 ...
Page 42: ...Service Manual B VMHxxAV 1 Outdoor Unit 8 8 A VMH18SV 1 A VMH24SV 1 ...
Page 45: ...Service Manual B VMHxxAV 1 ...
Page 103: ...Service Manual B VMHxxAV 1 Troubleshooting 15 ...