Model reference

LG UU61W

Air Conditioner

1 document32 error codes2 service modes

Available documentation

Service Manual

Universal System Air Conditioner SVC MANUAL (Exploded View)149 pg
Covers this model

MyPros+ Max

Diagnose your LG UU61W.

Step-by-step diagnostics from the service manual
Test values, resistance specs, and wiring references
Verified part numbers when replacement is needed

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M+

M+ Max·LG Air Conditioner

01 on my LG UU61W

M+

Indoor room thermistor (air sensor)

From Service Manual 625871, p.43:

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 (32)

CodeMeaning

01Indoor room thermistor (air sensor) error 02Indoor inlet pipe sensor error 03Communication error between indoor unit and wired remote controller.04Drain pump / float switch error 05Communication error between indoor and outdoor units.06Indoor outlet pipe sensor error 07Different mode operation error 105Communication error between main board and fan board.21DC Peak / IPM Fault 22CT 2 (Max CT)23DC Link Low Voltage 24Low/High pressure switch open.25Low voltage / Over voltage 26DC Compressor Position Error 32Discharge pipe temperature high for inverter compressor (105°C or above).33Discharge pipe temperature high for constant speed compressor.40CT Sensor error 41Inverter discharge pipe thermistor error 44Outdoor air thermistor error 45Condenser pipe sensor error 46Suction pipe sensor error 47Constant speed compressor discharge pipe thermistor error 51Over capacity 52Communication error between main micom and sub micom (inverter micom to main…53Communication error between indoor and outdoor units (outdoor side display).54Outdoor 3-phase power supply error 60EEPROM Check Sum Error.61Condenser pipe temperature high (65°C).62Heat sink temperature high (95°C).63Condenser pipe temperature low.

View all 32 error codes

65Heat sink thermistor error 67Outdoor BLDC fan motor locked / not operating.

Service modes (2)

E.S.P. Setting Mode (External Static Pressure adjustment for duct type)["1
Forced Operation["Available on all indoor unit types (listed as a function in the function tables)."]

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

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