LG Mini Split H10 Error Code

Updated 2026-08-30 · review status: manual-verified · reviewed by MiniSplitDecoder Editorial Team Last verified: 2026-08-30

Check your model first

  • LG code references (MyPros+, TechFaultFix, OnlyErrorCodes, Beacon)
  • Beacon (FL HVAC dealer guide)
  • TechFaultFix cause list

Match the model on your equipment label to the linked manufacturer documentation. The same code can mean different things across model families.

Quick answer

LG H10/CH10 means an indoor fan motor fault - the BLDC blower is locked, stalled, or not reporting rotation, so the unit shuts down. The fan usually tries to start and stops, or there is little or no airflow. Reset once and check the filter/intake; the blower wheel, motor, and its wiring are technician work, and the unit should not be run with this code active.

Severity: high · DIY difficulty: easy

Safety

Stop at the breaker power-cycle and any plug-accessible checks (filters, remote settings, visible wiring). The outdoor unit's capacitor holds a lethal charge and the refrigerant circuit is both pressurized and (on R-32 units) flammable — opening panels or servicing the sealed system is licensed-technician work (EPA 608).

What H10 means

H10 (CH10) means an indoor fan error: the indoor BLDC fan motor is locked, stalled, not starting, or not reporting rotation to the control board. Without reliable indoor airflow the unit cannot heat or cool safely and shuts down to protect the motor. Multiple LG code references agree on the BLDC fan-motor-lock reading; wording varies slightly by series ('fan lock', 'BLDC motor fan error', 'indoor fan motor operation problem').

Code meaning varies by series

  • LG code references (MyPros+, TechFaultFix, OnlyErrorCodes, Beacon): CH10 = indoor unit BLDC fan motor lock/stall: control board detects the fan is not spinning correctly
  • Beacon (FL HVAC dealer guide): CH10 = indoor fan motor lock or BLDC fan motor problem on many LG mini split systems - fan may try to start then stop
  • TechFaultFix cause list: Obstructed blower wheel, seized/worn motor bearings, incorrect fan-motor voltage from the indoor PCB, or faulty fan driver circuit

First checks before service

This page currently documents the safe reset triage. If the code returns, use the linked source manual or a qualified technician for code-specific diagnosis.

  1. 1. One-time fault event (power disturbance or transient sensor reading) common DIY

    Check: Power-cycle at the breaker/disconnect (or unplug for CPAP), restore, and run the system while watching for the code.

    Fix: If the code does not return after a full run cycle, the fault was transient — monitor, no repair needed.

  2. 2. Fault persists after a clean reset occasional pro only

    Check: If the code returns immediately or every session, note the conditions (startup, heating, after rain).

    Fix: A persisting code points at the component the manual assigns to this code — that repair is technician territory.

Related codes

Cross-references for the same fault family, by brand:

LG H07 · LG H05 · LG H34

Commonly searched as: "lg h10" · "lg error code h10" · "lg air conditioner h10"

Sources

Related Mini Split guides

Mini-Split Communication Error: DIY Checks · Mini-Split Flashing Light Decoder: Blink Patterns · Mini-Split Maintenance Checklist: Seasonal DIY Tasks · Mini-Split Not Cooling: Ranked Causes and DIY Checks