LG PMNFP14A0, Installation Manual, Page: 7 / 91

Installation Guide
Installation Manual 7
Installation Steps
1. Connect CN_OUT with Outdoor Unit by the cable (provided)
2. Connect RS-485 BUS_A(+) and BUS_(B)(-) with other network products (ex.
Central Controller , I-Gateway.....)
3. In case of using Simple Central Controller, connect VCC(+10V) and GND.
No need to connect otherwise.
4. Select DIP Switch Configuration(Refer page 8)
5. Connect CN_PWR with Outdoor PCB Power connector
6. After Power is ON, check the Communication LED
- LED1G(Red)
• Normal : LED blinks as many as the number of Connected Indoor units, and then
turns OFF.
This process is repeated after every 3 minutes
• Error : Check the Indoor Unit's address & wiring connections
- LED2G(Yellow), LED3G(Orange)
• Normal : LED blinks continuously
• Error : Check the DIP Switch setting & wiring connections
7. Check RS-485 Communication Status LED:
• Normal : LED blinks when PI485 receives data from central controller.
• Error : Check the wiring connections
8. Finally if all of the above steps are OK, then tie the cables by tie wraps & clamp
Installation Guide
9
8
3
2
1
6 7
4 5
ENGLISH
* Example about Multi V plus
CAUTION:
Install the PI485 on the Noise Filter in Multi V plus.
Install the PI485 after checking the hole for screw.