Hitachi FSXN Series Service Manual page 121

6 Optional functions
6.2 External input and output setting
The outdoor unit PCB has three input terminals (CN17, CN18) that receive external signals and two output terminals (CN16)
that send signals to the exterior.
The control functions are available by setting input and output terminals as shown below:
Control function number
1
2
3
4
5
6
7
8
9
10
11
12
13
0
Control function number
1
2
3
4
The following functions are set before shipment:
Name of the input terminal
Input 1
Input 2
Input 3
Name of the output terminal
Output 1
Output 2
115
SMGB0065 rev. 1 - 12/2010
Fixing the heating mode
Fixing the cooling mode
Demand stoppage
Outdoor unit fan motor start/stop
Forced stoppage
Control of 40% current demand
Control of 60% current demand
Control of 70% current demand
Control of 80% current demand
Control of 100% current demand
Low noise level setting 1
Low noise level setting 2
Low noise level setting 3
Without setting
Operating signal
Alarm signal
Compressor ON signal
Defrost signal
Connector pin number
CN17 (1-2) Setting the heating mode
CN17 (2-3) Setting the cooling mode
CN18 (1-2) Stoppage demand
Connector pin number
CN16 (1-2) Operating signal
CN16 (1-3) Alarm signal
Setting of input functions
Configuration of output functions
Setting function
Setting function
Control function number
1
2
3
Control function number
1
2
6