mypros+
Model reference

LG L5UC728FA1

Air Conditioner

1 document13 error codes15 service modes

Available documentation

Service Manual

  • Multi Type Air Conditioner SERVICE MANUAL160 pg
    Covers this model
MyPros+ Max

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Error codes (13)

CodeMeaning
01Indoor room thermistor error (open/short circuit).02Indoor inlet pipe thermistor error (open/short circuit).03Wired remote controller communication error (open/short/wrong connection).04Drain pump / float switch error (float switch open, normally should be short).05Communication error between indoor and outdoor unit (indoor side display).06Indoor outlet pipe thermistor error (open/short circuit).33Discharge pipe temperature high (compressor discharge sensor temperature high).44Outdoor air thermistor error (open/short circuit).45Condenser pipe thermistor error (open/short circuit).47Constant compressor discharge pipe thermistor error (open/short circuit).51Capacity error (over capacity combination of indoor units).53Communication error between indoor and outdoor unit (outdoor side display).54Phase error on outdoor unit 3-phase power supply.

Service modes (15)

  • Address Monitoring (Wireless Remote Controller)Press Chaos Swing (6) and Reset (13) keys simultaneously to enter Address Monitoring Mode.
  • address_monitoring_wirelessPress Chaos Swing (6) and Reset (13) keys simultaneously to enter Address Monitoring Mode
  • address_setting_wired1) Press Program (13) and Set/Clear (16) keys simultaneously for more than 3 seconds to enter…
  • address_setting_wireless1) Press Jet Cool (5) and Reset (13) keys simultaneously for more than 3 seconds to enter Address…
  • ESP (External Static Pressure) Setting (Duct Type)1
  • ESP_setting1) Press On/Off to start unit
  • Forced Operation (Cassette Type)Press the button for 2 seconds to start forced operation.
  • Forced Operation (Slide Switch)Switch the slide switch on the main indoor unit to the forced operation position while power is on…
  • forced_operation_cassettePress the forced operation button on the cassette type unit for 2 seconds.
  • Indoor Unit Address Setting (Wired Remote Controller)1
  • Indoor Unit Address Setting (Wireless Remote Controller)1
  • Test Run (Cassette Type)Press the button for 5 seconds to start the test run.
  • Test Run (Room/Split Type)Press the timer cancel button five times continuously on the remote controller.
  • test_run_cassettePress the forced operation button on the cassette type unit for 5 seconds.
  • test_run_room_typePress the Timer Cancel button five times continuously on the room type remote controller.

Full entry steps, exit procedures, and test sequences are available in Max.

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