External Input And Output Setting (By 7-Segment Display); Available Control Functions - Hitachi UTOPIA RAS-4HVRP2E Service Manual

6 Optional functions
RAS-3HVRC2

6.1.2 External input and output setting (by 7-segment display)

6.1.2.1 Available control functions

The outdoor unit PCB1 has three input terminals (CN1, CN2) that receive external signals and two output terminals (CN7)
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
0
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
?
N O T E
The same input/output function cannot be assigned to different input/output terminals. In such case, the setting of the higher terminal
number would become invalid.
107 SMGB0136 rev.0 - 07/2021
Setting of input functions
Fixing heating operation mode
Fixing cooling operation 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
Without setting
Input terminal
Connector pin number
CN1 (1-2)
CN1 (2-3)
CN2 (1-2)
Output terminal
Connector pin number
CN7 (1-2)
CN7 (1-3)
Configuration of output functions
Operating signal
Alarm signal
Compressor ON signal
Defrost signal
Without setting
Setting function
Fixing heating operation mode
Fixing cooling operation mode
Demand stoppage
Setting function
Operating signal
Alarm signal
Control function number
1
2
3
Control function number
1
2
6