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LG Air Conditioner CH10 Error Code

Indoor fan motor problem. Here is what it means and how to clear it, easiest fix first.

CH10
Moderate DIY

The unit's self-check has found a problem with the indoor fan. LG says debris blocking a fan can trigger these fan codes, but a failing fan motor, damaged wiring or a control board fault are also possible.

Some models show E6 instead of CH10. LG says its error-code guide covers all models, so the exact code and its meaning can differ on yours; check your owner's manual.

Safety first: unplug the air conditioner (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 CH10

  1. Clean the filters

    Switch off the breaker, then remove and wash the filters, let them dry and refit them so the fan isn't fighting a blocked air path. Don't reach into the air outlet or remove covers to get at the fan.

  2. Check nothing is blocking the unit

    Make sure curtains, furniture or stored items aren't pressed against the indoor unit's air intake or outlet.

  3. Reset the power at the breaker

    Switch off the breaker that feeds the air conditioner (some systems have separate breakers for the indoor and outdoor units, so switch off both). Wait about five minutes, switch the power back on and restart the unit to see if the code clears.

When to call a technician

If the code returns, stop using the unit and book service. Fan motor and board work requires opening the indoor unit, which LG warns against doing yourself.

Parts that commonly cause CH10

Order parts by your exact model number so they fit.

Other LG air conditioner codes

Frequently asked questions

What does CH10 mean on a LG air conditioner?

The unit's self-check has found a problem with the indoor fan. LG says debris blocking a fan can trigger these fan codes, but a failing fan motor, damaged wiring or a control board fault are also possible.

Can I fix LG CH10 myself?

Often. The first steps above are safe checks a homeowner can do. If they don't clear CH10, the cause is likely a worn part that needs replacing.

What if CH10 keeps coming back?

A code that returns after a reset and the checks above usually means a part is wearing out. Note when CH10 appears (which cycle, how often) and have your model number ready; it helps a technician bring the right part on the first visit.

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

References