LC
Gree Split AC
Severity: ModerateWhat Does This Error Mean?
LC means the compressor tried to start but failed after multiple attempts. This can be caused by low voltage, a failed capacitor, or a damaged compressor motor. Do not keep restarting — repeated failed starts cause heat damage.
Affected Models
- Gree FAIRY Series
- Gree LOMO Series
- Gree U-MATCH Series
- Gree PULAR Series
- Gree Inverter Split System
Common Causes
- Starting capacitor has failed and cannot provide startup current
- Supply voltage is too low to start the compressor under load
- Compressor motor windings are damaged or shorted
- Outdoor PCB not sending the correct start signal sequence
- Compressor is mechanically seized (refrigerant flood back or oil loss)
How to Fix It
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Turn the AC off at the remote and wait 15 minutes before restarting once.
A single restart attempt is fine — repeated attempts with no success can cause damage.
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Check that the supply voltage at your breaker panel is normal.
Low voltage (below the unit rated minimum) is a common cause of LC on hot summer days when grid load is high.
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Inspect the outdoor unit — make sure the unit is not running in extreme cold.
Some Gree models will trigger LC if asked to cool in very cold ambient temperatures outside their rated range.
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If the code persists after one restart, stop using the unit and call a technician.
A technician will check the capacitor, supply voltage, and compressor windings to find the exact cause.
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Ask the technician to check refrigerant levels as part of the diagnosis.
Low refrigerant increases starting load and can contribute to LC errors.
When to Call a Professional
Call a technician as soon as possible for an LC error. Capacitor replacement is a minor repair, but compressor diagnosis requires refrigerant gauges and electrical testing. Do not run the unit repeatedly — each failed start attempt adds heat stress to the compressor.
Frequently Asked Questions
What is the most common fix for a Gree LC error?
On older units, a failed starting capacitor is the most common cause. Capacitor replacement is inexpensive and fast. On newer inverter models, low supply voltage or PCB faults are more common.
My Gree shows LC but cools fine for a few minutes then stops — what does that mean?
This suggests the compressor starts but cuts out shortly after due to overcurrent or overheating. Get it checked promptly — operating like this shortens the compressor lifespan significantly.
Can an LC error permanently damage the compressor?
Yes, if you repeatedly force the unit to attempt starting when there is a fault. Each failed start attempt generates heat inside the compressor motor windings. Stop attempting to run the unit and get it diagnosed.