Elba R410A Guía para resolver problemas descargar pdf (Pagina 88)

Troubleshooting Guide

- 92 -

Only for training and service purposes

LGE Internal Use Only

4) Troubleshooting CH05, CH53

Title

Communication

(Indoor → Outdoor)

• Communication poorly

• Power input AC 220V. (Outdoor, Indoor)

• The connector for transmission is disconnected.

• The connecting wires are misconnected.

• The communication line is shorted at GND.

• Transmission circuit of outdoor PCB is abnormal.

• Transmission circuit of indoor PCB is abnormal.

Display

code

Title Cause of error Check point & Normal condition

Check Point

1. Check the input power AC230V. (Outdoor, Indoor unit)

2. Check the communication wires are correctly connected.

Adjust the connection of wire Confirm the wire of "Live",

"Neutral"

3. Check the resistance between communication line and GND.

(Normal : Over 2MΩ)

4. Check the connector for communication is correctly connect-

ed.

5. If one indoor unit is operated normally, outdoor PCB is no

problem.

Check the another indoor unit.

* CH05 is displayed at indoor unit, CH53 is displayed at

outdoor unit.

6. If all indoor unit is displayed CH05 but outdoor PCB not

display

CH53 : Check the CN_COM and CN_POWER is correctly

connected.

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Elba R410A Guía para resolver problemas Pagina 88