Optional Input And Output Signals (By 7-Segment Display); Available Ports - Hitachi RAS-2-HVNP Service Manual

6. Optional functions

6.1 Optional input and output signals (By 7-segment display)

The system has several input and output signals, which can be selected using the following connectors of the outdoor unit's
PCB:
Input connectors CN1 and CN2, which have two and one ports respectively to configure three optional input signals.
-
- Output connector CN1, which has two ports to configure two optional output signals.
The selection of these input and output signals represent the selection of some optional functions programmed in the PCB
of the outdoor unit.
6.1.1 Available ports
The system has the following input and output ports.
Content
Inputs
Outputs
  
Connection
The system has the following connections:
Input connections
Indication
CN1
i1
CN1
i2
CN2
i3
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SMGB0079 rev.0 - 01/2013
Setting of the port in the PCB
of the indoor unit
1-2 of CN1
i1
2-3 of CN1
i2
1-2 of CN2
i3
1-2 of CN7
o1
1-3 of CN7
o2
Connections
Remarks
Output connections
Indication
CN7
o1
CN7
o2
Outlet
Contact
Contact
Contact
DC 12V
DC 12V
Connections