Gree Mini Split E4 Error Code

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

Check your model first

  • Livo / R32 residential splits

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

Quick answer

E4 returns after filters and outdoor clearance are corrected. Tell them the code is compressor high discharge temperature. Technician boundary Stop here: refrigerant or sealed-system and compressor work is technician-only. Do not open panels, test capacitors, touch wiring, connect gauges, add refrigerant, or keep resetting the system.

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 E4 means

E4 means the compressor discharge temperature is too high. Poor airflow or low charge can drive it, but repeated E4 faults point to a refrigerant-circuit or compressor problem that needs a technician. Do not keep running or resetting the system.

Code meaning varies by series

  • Livo / R32 residential splits: Compressor discharge over-temperature protection

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:

Gree E1 · Gree E3 · Gree E5

Commonly searched as: "gree e4" · "gree error code e4" · "gree air conditioner e4"

Sources

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