Reference; Troubleshooting - LG PQCPA11A0E Installation & Owner's Manual

4. Reference

4. Reference

Troubleshooting

If any unexpected problem is occurred when using the ACP, see the following list to find out the solution.
If there is no solution to find, visit http://www.lgservice.com to let us know about it.
If Tx or RX LED of Ports 1~4 of the EE-NET is not blinking when installing the
product.
When installing the product, if TX or RX LED of the ports 1~4 of the LG-NET is not blinking, set and
execute the group of the indoor/outdoor unit.
If the GUI of the EE ACCS, the application program of the ACP, does not operrate
If the GUI of the EE ACCS, the application program of the ACP, does not operate, close the Explorer
window and execute a new Explorer to connect again.
When network error status (Code 242) is displayed on ventilator in LG ACCS of ACP
When the network error status is continuously displayed on the ventilator as shown below through LG
ACCS, the web server program of ACP, check the following details.
1. Check whether the BUS_A and BUS_B of RS485 cable are connected incorrectly.
2. Check whether there is any communication error between the remote controller and indoor unit.
3. Check whether the DIP switch of PI485 is set incorrectly.
4. Check whether the indoor unit address of the central control is not set up.
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ACP