Error Code E CH

High Side Cycle Leakage — detected by refrigerant leak, restriction, bad compressor, bad valve, etc. on the high-pressure side

Also displayed as: E CH

How to Fix

1. 1

   Step 1: Use LG SVC App Step 1 jig to determine if issue is compressor fault, sealed system problem, or normal (customer emotional fault). If no SVC App, use a temperature gun to check temperatures.

2. 2

   Step 2: Check PCB output voltages to rule out PCB failure.

3. 3

   Step 3: Measure high-side pressure (at drier) and low-side pressure (at compressor process pipe). Time how long equalization takes. If equalization takes more than 15 minutes, the system is restricted.

4. 4

   Step 4: If equalization pressure is below 40 psi, refrigerant is low — perform leak test using refrigerant or nitrogen.

5. 5

   Step 5: Check high-pressure side components (condenser, drier) for leaks. If leak found, replace affected parts along with the drier.

6. 6

   Step 6: If no high-side leak found, check low-pressure side (evaporator, suction pipe) for leaks.

7. 7

   Step 7: After sealed system repair, the error will clear automatically once freezer temperature drops to 14°F or below.

8. 8

   Step 8: Use UV dye in drier for next visit leak verification.

9. 9

   Step 9: Force-delete error code after confirmed repair using F key + R key pressed 3 times with door open.

This Error Applies To

LG LRFCS29D6S Series Refrigerators