Troubleshooting4-474-4-18. IPM IPM (Over Current) error (Error Code : E464)1. Test items11) Check the power connection. / Check the restart after power reset.2) Install outdoor unit and check environment.ĺ Check for wire disconnection related to outdoor unit Inverter PCB and check the installation environment.ĺ After having installed several units, please check that communication wires are not interchanged with piping.3) Check the indoor unit installation environment.4) Check the opening of service valve.5) Check the status of compressor assembly and wiring.6) Check the defective for compressor wire single parts.2. Check procedureYesOutdoor unit installation and environment check.ĺ Check for normal operation at restart.ĺ End the service.1. Check for wire disconnection related to outdoorunit Inverter PCB.2. Remove obstacle on the inlet of outdoor unitand secure the space.Check installation environment of indoor unit. ĺ checkfor normal operation at restart. ĺ End the service.1. Remove obstacle on the inlet and secure the space.2. Remove obstacle on the outlet and secure the space.NoIs the outdoor unit installed properly?NoYesContinuePower on 30 seconds after power off.Install again by following the standard specifications.NoYesBad installationPipingWiringཱིIs indoor and outdoor unit wiring/pipinginstalled properly?Is the indoor unit installed properly?
