LG CH 26 error code

What it means

CH 26 means the outdoor inverter compressor did not start as expected. LG's support table lists outdoor compressor failure as the stated cause, with temporary operation error also possible.

Urgency

Likely causes

1. Outdoor compressor failure
2. Temporary operation error
3. Compressor-start or inverter-drive condition needing service

Homeowner fix

Turn the system off and power cycle once at the breaker if you can do that safely. If CH 26 returns or the outdoor unit will not start, stop using it.

When to call a pro

Call a licensed HVAC technician if CH 26 returns. Tell them LG identifies CH 26 as outdoor inverter compressor start failure.

Repair vs replace

Compressor-start faults can be expensive. On older out-of-warranty systems, compare any compressor or major inverter repair with replacement.

• LG Mega R-32 9,000 BTU (115V)

  Mega R-32

• LG Mega R-32 9,000 BTU (230V)

  Mega R-32

• LG Mega R-32 12,000 BTU (115V)

  Mega R-32

• LG Mega R-32 12,000 BTU (230V)

  Mega R-32

For your technician

Technician note: check compressor start diagnostics, inverter output, compressor windings/insulation, power supply, and outdoor board. Page context: LG maps this display to the Mega R-32 line; source: LG official support pages: [LG Air Conditioner] Guide to Error Codes; [LG Air Conditioner] How to Check Air Conditioner Error Codes; LG status-display help articles; LG Korea [LG Air Conditioner] Air conditioner error inquiry cross-check; display convention: match the letter C, letter H, and twenty six marker exactly before comparing neighboring codes.

Which systems show it

Mega R-32

Related troubleshooting

Use the symptom guide alongside the exact display code if the unit is flashing, cycling, or showing comfort symptoms.

Related codes

Source

Next step