Model reference

LG LMNH126LRL0

Name: LG LMNH126LRL0
Brand: LG

Air Conditioner

2 documents13 error codes18 service modes

Available documentation

Service Manual

Multi Type Air Conditioner SERVICE MANUAL160 pg
Covers this model
Multi Type Air Conditioner SERVICE MANUAL157 pg
Covers this model

MyPros+ Max

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Test values, resistance specs, and wiring references
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01 on my LG LMNH126LRL0

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Indoor room thermistor error

From Service Manual 773575, p.27:

1.Access service mode to confirm the active fault code and read stored error history.

2.Disconnect the sensor and measure resistance. Expected: 10 kΩ to 12 kΩ at 77°F (25°C).

3.Check the sensor harness for opens. A reading outside 5 kΩ to 50 kΩ indicates a failed sensor.

Part 6322FR2046G

Temperature thermistor

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 (18)

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_wired_remocon["Press Program (key 13) and Set/Clear (key 16) 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…
address_setting_wireless_remocon["Press Jet Cool (key 5) and Reset (key 13) simultaneously for more than 3 seconds to enter Address…
ESP (External Static Pressure) Setting (Duct Type)1
esp_setting["Push the On/Off button to start the unit.","Push the Timer and Wind button simultaneously for…
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["Locate the forced operation slide switch on the main unit.","Switch the slide switch from remote…
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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