274
Optional Function
4.2 External Input and Output Setting
On the outdoor unit PCB, there are three input terminals (CN17, CN18) to receive external signals and two output terminals
(CN16) to send signals outwards. Control functions shown in the table below are available by setting input and output
terminals.
<Input> <Output>
Control Function No. Setting Function for Input
1 Fixing Heating Operation Mode
2 Fixing Cooling Operation Mode
3 Demand Stoppage
4 Outdoor Fan Motor Start/Stop
5 Forced Stoppage
6 Demand Current Control 40%
7 Demand Current Control 60%
8 Demand Current Control 70%
9 Demand Current Control 80%
10 Demand Current Control 100%
11 Low Noise Setting 1
12 Low Noise Setting 2
13 Low Noise Setting 3
0 No Setting
Control Function No. Setting Function for Output
1 Operation Signal
2 Alarm Signal
3 Compressor ON Signal
4 Defrosting Signal
0 No Setting
The following functions have been already set before shipment.
<Input Terminal>
Input Terminal Name Connector (Pin No.) Setting Function Control Function No.
Input 1 CN17 (1-2) Fixed Heating Operation Mode 1
Input 2 CN17 (2-3) Fixed Cooling Operation Mode 2
Input 3 (*) CN18 (1-2) Demand Stoppage 3
Output Terminal Name Connector (Pin No.) Setting Function Control Function No.
Output 1 CN16 (1-2) Operation Signal 1
Output 2 CN16 (1-3) Alarm Signal 2
<Output Terminal>
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