Gree Split AC Error Code F8 — What It Means & How to Fix It

What Does This Error Mean?

F8 means the AC has detected excess current draw and reduced the compressor speed to protect components. The unit continues operating at lower capacity rather than shutting down completely. Check supply voltage and clean the outdoor unit as first steps.

Affected Models

Gree FAIRY Series
Gree LOMO Series
Gree U-MATCH Series
Gree PULAR Series
Gree Inverter Split System

Common Causes

Low supply voltage forcing the AC to draw higher current
Dirty outdoor coil making the compressor work harder and draw more current
Low refrigerant charge increasing compressor load
Compressor starting to degrade and drawing excess current under load
Shared circuit with other high-power appliances causing voltage sag

How to Fix It

Check whether other large appliances (air conditioners, washing machines, ovens) are running on the same circuit.

F8 is often triggered when too many appliances share a circuit, causing the voltage to sag and the AC current to spike.
Clean the outdoor condenser coil if it appears dirty.

A dirty condenser forces the compressor to work harder at higher current. Cleaning it is the cheapest and quickest fix to try.
Check the supply voltage at the outdoor unit with a multimeter if possible.

Voltage below 200 V under load will cause the AC to draw excess current. This requires an electrician to resolve.
Reduce the number of appliances running simultaneously and observe whether F8 clears.

If F8 stops after reducing load on the circuit, you have identified a wiring or capacity issue that an electrician should address.
If F8 continues on a dedicated circuit with correct voltage and clean coils, call a technician to check refrigerant level and compressor health.

A compressor drawing excess current despite clean coils and correct voltage is showing signs of wear or internal fault.

When to Call a Professional

Call a technician if F8 appears regularly or if reducing other electrical loads does not help. Low refrigerant and compressor wear both require professional diagnosis. Persistent over-current conditions cause progressive damage to the IPM and compressor.

Frequently Asked Questions

What is the difference between F8 and E5?

F8 is a soft protection — the compressor slows down but keeps running. E5 is a harder protection — the AC shuts down completely due to over-current. F8 is the system trying to manage itself; E5 means it has given up trying.

Can bad wiring in the house cause F8?

Yes — undersized cable, loose connections, or a long wiring run can all cause voltage drop. Low voltage means higher current for the same power, which triggers F8. An electrician can identify and fix wiring issues that cause this.

If the AC is still cooling with F8 showing, is it safe to leave it running?

Short-term, the AC is managing itself safely by reducing compressor speed. However, the underlying cause should be investigated — persistent over-current conditions wear out the compressor faster. Fix the root cause within a few days.