LG P8 error code

What it means

LG says some models may show P8 instead of CH 61. The unit is protecting itself from high outdoor temperature in cooling or high indoor temperature in heating.

Urgency

Likely causes

1. Outdoor unit area not ventilated well during cooling
2. Hot air from the outdoor unit recirculating around the condenser
3. Objects blocking outdoor airflow
4. Poor indoor air intake during heating, often from a dirty indoor filter

Homeowner fix

Open any outdoor-unit ventilation window or screen, clear objects around the outdoor unit, and clean the indoor filter. Then power cycle once.

Replacement part

When to call a pro

Call a licensed HVAC technician if P8 returns after airflow and filter checks. Tell them LG groups P8 with CH 61 overheating protection on some models.

Repair vs replace

Airflow corrections are low-cost. If a technician finds refrigerant, fan, sensor, or control-board problems on older equipment, compare the 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: use the CH 61 overheating-protection path for model-specific P8 displays. 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 P and eight 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