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LG Refrigerator Er CH Error Code

Sealed system (refrigerant) fault. What it means, which models show it, and how to clear it, easiest fix first.

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Er CH
May need a pro

LG uses CH and CL to flag a likely refrigerant leak or valve fault in the sealed cooling system: CH on the high-pressure side near the condenser, CL on the low-pressure side near the evaporator. The fridge may cool poorly or not at all.

Compatible models

LG doesn't publish a model list for this code; it appears on LG refrigerators with a digital display. Check your owner's manual.

Also shown as

Shown as CH E, E CH, CL E or E CL.

Difficulty

Try the basic checks, but the usual fix is a technician's job.

Safety first: unplug the refrigerator (or switch off its breaker) before touching filters, hoses or panels. If you smell burning or gas, or see water near the outlet, stop and call a professional.

How to fix LG Er CH

  1. Protect your food

    Move perishable food to a cooler or another refrigerator, and keep the doors closed as much as possible.

  2. Do not touch the sealed system

    Do not attempt to recharge, open or tap into refrigerant lines. This work requires a licensed technician.

When to call a technician

Request service right away. Refrigerant and sealed-system repairs are licensed technician work.

Parts linked to Er CH

These are the parts most often behind this code. Tap one to see what it does and the signs it is failing.

Order parts by your full model number so they fit.

Frequently asked questions

What does Er CH mean on a LG refrigerator?

LG uses CH and CL to flag a likely refrigerant leak or valve fault in the sealed cooling system: CH on the high-pressure side near the condenser, CL on the low-pressure side near the evaporator. The fridge may cool poorly or not at all.

Which LG models show the Er CH code?

LG doesn't publish a model list for this code; it appears on LG refrigerators with a digital display. Check your owner's manual.

Can I fix LG Er CH myself?

Only the basic checks. You can safely try the steps above, but Er CH usually points to a part or fault that needs a technician.

What if Er CH keeps coming back?

A code that returns after a reset and the checks above usually means a part is wearing out. Note when Er CH appears (which cycle, how often) and have your model number ready; it helps a technician bring the right part on the first visit.

Other LG refrigerator codes

Last reviewed 2026-10-19. Codes and steps can vary by model; check your owner's manual.

Sources we checked