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

1. undefined: Use LG SVC App Step 1 to determine if issue is sealed system, compressor, or normal (customer emotional fault). 2. undefined: If no SVC App: use temperature gun to check evaporator temperature. 3. undefined: Check voltage to determine if PCB is faulty (change PCB if bad). 4. undefined: Check return time to equilibrium pressure after measuring high pressure (drier) and low pressure (comp process pipe). If return takes more than 15 minutes: restriction is likely. 5. undefined: Check equilibrium pressure. If above 20 psi: compressor is likely faulty. If below 20 psi: refrigerant has leaked. 6. undefined: Perform refrigerant leak test using refrigerant or nitrogen on high-pressure parts (condenser, drier, etc.). 7. undefined: If no leak found on high side: check low-pressure parts (evaporator, suction pipe). 8. undefined: Replace defective parts with new drier. Always replace drier when opening sealed system. 9. undefined: After repair, error code clears automatically when freezer reaches 14°F or below. 10. undefined: If leak cannot be located: install UV drier for UV dye leak detection on next visit.

LG Refrigerators

Error Code E CH

High side cycle leakage

Moderate

Address soon - your appliance may not work properly

How to Fix

1
Use LG SVC App Step 1 to determine if issue is sealed system, compressor, or normal (customer emotional fault).
2
If no SVC App: use temperature gun to check evaporator temperature.
3
Check voltage to determine if PCB is faulty (change PCB if bad).
4
Check return time to equilibrium pressure after measuring high pressure (drier) and low pressure (comp process pipe). If return takes more than 15 minutes: restriction is likely.
5
Check equilibrium pressure. If above 20 psi: compressor is likely faulty. If below 20 psi: refrigerant has leaked.
6
Perform refrigerant leak test using refrigerant or nitrogen on high-pressure parts (condenser, drier, etc.).
7
If no leak found on high side: check low-pressure parts (evaporator, suction pipe).
8
Replace defective parts with new drier. Always replace drier when opening sealed system.
9
After repair, error code clears automatically when freezer reaches 14°F or below.
10
If leak cannot be located: install UV drier for UV dye leak detection on next visit.