Samsung AM072/096/120/144FXVAFH, Service Manual

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8-2 Samsung Electronics
SW58
K21 K22
K21 K22
TEN ONE MCU
0 1 2 3
4 5
6
7
8 9 A B
C
D
E F
Switch Setting Function Remarks
SW51/
SW52
Setting total number of installed indoor unit
SW51: Tens digit, SW52: Units digit
Setting can be done from the main outdoor unit only
(sub unit: setting is unnecessary)
Ex) When 12 indoor units are installed
→ SW51: 1, SW52: 2
SW53
K5
ON H/P(Heat Pump) System Connect Liguid pipe and High pressure gas pipe
OFF HR(Heat Recovery) System Close outdoor unit's heatpump valve
K6
ON
Enable maximum capacity restriction for cooling
operation Restrict excessive capacity increase when operating indoor
units with small capacity
OFF
Disable maximum capacity restriction for cooling
operation
-
K7 K8 Selecting outdoor unit address
ON ON Outdoor unit address: No 1 Main unit
ON OFF Outdoor unit address: No 2 Sub unit 1
OFF ON Outdoor unit address: No 3 Sub unit 2
OFF OFF Outdoor unit address: No 4 Sub unit 3
SW57 Setting total number of connected MCU
Setting can be done from main unit only
Ex) When 3 MCUs are installed
→ SW57: 3, SW52: 2
SW58
K21 K22 Selecting type of circulating water
ON ON Water circulation -
ON OFF
Anti-freeze circulation (freezing point of anti-freeze
must be below -8 °C)
Minimum temperature of entering water -5 °C
OFF ON
Anti-freeze circulation (freezing point of anti-freeze
must be below -15 °C)
Minimum temperature of entering water -10 °C
※
Maintain appropriate concentration level of anti-freeze according to SW58 switch setting.
㽞
AM
6666
XW
666
※ If you install HR products, you must match the address between the MCU and the indoor unit.
Outdoor unit option switch settings
(cont.)