Model reference

LG GM-R423YC

Name: LG GM-R423YC
Brand: LG

Refrigerator

1 document3 error codes4 service modes

Available documentation

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M+ Max·LG Refrigerator

R0 on my LG GM-R423YC

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Refrigerator sensor failure — short or

From Service Manual 444455, 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

CodeMeaning

Reset (from Test Mode)While in Test 2, short-circuit the TEST jumper one more time.
Test 1Press (short) the test button / TEST short jumper on the PCB once.
Test 2While in Test 1, short-circuit the TEST jumper one more time.
Test Mode (Diagnostic)Short-circuit the jumpers marked TEST (short) on the refrigerator PCB

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

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