How do I fix error code E CH on a LG refrigerators?

1. undefined: Note the error code and use the LG SVC App Step 1 to determine if the sealed system is at fault or if it is a customer/usage issue. 2. undefined: If SVC App is not available, use a temperature gun to check evaporator temperature. 3. undefined: Check PCB output voltage at CON201 to confirm Main PCB is not the cause. 4. undefined: After power off, measure the time for high and low side pressures to equalize. If equalization takes more than 15 minutes, a restriction is present. 5. undefined: If equalization pressure is 40 psi or more, the refrigerant charge is normal — the compressor is likely defective. Replace the compressor. 6. undefined: If equalization pressure is below 40 psi, refrigerant has leaked. Perform leak test on high-pressure parts first: condenser, drier, compressor discharge pipe. 7. undefined: If no high-side leak found, check low-pressure parts: evaporator, suction pipe. 8. undefined: Replace leaking parts along with the drier after any sealed system repair. 9. undefined: After repair, the error code clears automatically once freezer temperature drops to 14F or below (typically within 1 day). 10. undefined: To force clear the error code: press F key + R key 3 times with door open. 11. undefined: For follow-up visits, install a UV drier to locate future leaks.

LG Refrigerators2020–present

Error Code E CH

High-Side Cycle Leakage — detected by compressor high-side refrigerant leak, restriction, bad compressor, or bad 3-way valve

Moderate

Address soon - your appliance may not work properly

Also displayed as: E CH

How to Fix

1
Note the error code and use the LG SVC App Step 1 to determine if the sealed system is at fault or if it is a customer/usage issue.
2
If SVC App is not available, use a temperature gun to check evaporator temperature.
3
Check PCB output voltage at CON201 to confirm Main PCB is not the cause.
4
After power off, measure the time for high and low side pressures to equalize. If equalization takes more than 15 minutes, a restriction is present.
5
If equalization pressure is 40 psi or more, the refrigerant charge is normal — the compressor is likely defective. Replace the compressor.
6
If equalization pressure is below 40 psi, refrigerant has leaked. Perform leak test on high-pressure parts first: condenser, drier, compressor discharge pipe.
7
If no high-side leak found, check low-pressure parts: evaporator, suction pipe.
8
Replace leaking parts along with the drier after any sealed system repair.
9
After repair, the error code clears automatically once freezer temperature drops to 14F or below (typically within 1 day).
10
To force clear the error code: press F key + R key 3 times with door open.
11
For follow-up visits, install a UV drier to locate future leaks.

This Error Applies To

LG LRMVS3006D Series Refrigerators (2020) (2020–present)

Service manual exact match: LRMVC2306SService manual exact match: LRMVC2306DService manual exact match: LRMDS3006DService manual exact match: LRMDS3006SService manual exact match: LRMVS3006DService manual exact match: LRMVS3006SService manual exact match: LRMDC2306SService manual exact match: LRMDC2306D

Related Error Codes

E FS

Freezer Sensor Error — short or open circuit in the freezer thermistor

E rS

Refrigerator Sensor Error — short or open circuit in the fresh food compartment thermistor

F dS

Freezer Defrost Sensor Error — short or open circuit in the freezer defrost sensor

r dS

Refrigerator Defrost Sensor Error — short or open circuit in the refrigerator defrost sensor

E HS

Humidity Sensor Error — short or open circuit in the humidity sensor

E CS

Convertible (Pantry/Full Convert) Sensor Error — short or open circuit in the pantry drawer sensor

E rt

Room Temperature Sensor Error — short or open circuit in the ambient room temperature sensor

E IS

Icing Sensor Error — short or open circuit in the icing compartment (in-door icemaker) sensor

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