GREE E4 error code

What it means

E4 means the compressor is running hot at the discharge line. Dirty filters or blocked outdoor airflow can contribute, but repeated E4 faults often need refrigerant-circuit and compressor checks. Manual trigger: E4 means the compressor discharge temperature is too high.

Urgency

Likely causes

1. Dirty filters, blocked coil airflow, or an outdoor clearance problem increasing pressure or temperature
2. Low charge, overcharge, leak, or refrigerant-flow restriction
3. Discharge, pressure, or refrigerant sensor reading outside range
4. Compressor, valve, or outdoor board issue after airflow and charge are verified

Homeowner fix

Clean the indoor filters, keep return and supply air paths open, and clear leaves, snow, or loose debris from around the outdoor unit without removing cabinet panels. Restore power once. Expected result: if airflow was the cause, the code clears; if it returns, stop there.

When to call a pro

Call a licensed HVAC technician if E4 returns after filters and outdoor clearance are corrected. Tell them the code is compressor high discharge temperature.

Repair vs replace

This is normally repairable, but it is not a homeowner repair. If the unit is older, out of warranty, or a technician quotes a major compressor, inverter, or sealed-system repair, compare that quote with replacement before approving it.

• GREE Livo R32 9,000 BTU (230V)

  Livo R32

• GREE Livo R32 9,000 BTU R-32 115V (LIV09HP115V1R32AH / LIV09HP115V1R32AO)

  Livo R32

• GREE Livo R32 12,000 BTU (230V)

  Livo R32

• GREE Livo R32 12,000 BTU R-32 115V (LIV12HP115V1R32AH / LIV12HP115V1R32AO)

  Livo R32

Parts for this line

The parts catalog for GREE Livo R32 lists 8 sourced replacement parts for this product line.

For your technician

Technician note: check airflow, discharge temperature, charge/restriction, non-condensables, discharge sensor, compressor load, and protection circuit. Page context: GREE maps this display to the Livo R32 line; source: GREE R32 residential mini-split service manuals; display convention: match the letter E and four marker exactly before comparing neighboring codes.

Which systems show it

• GREE LIVO R32 wall-mounted single-zone systems.
• GREE VIREO R32, ENVO R32, and Sapphire R32 wall-mounted single-zone systems using the common GREE R32 high-wall diagnostic table.
• GREE Free Match/Multi R32 and Free Match ECO/Multi ECO R32 systems when the connected indoor unit uses this common GREE indoor display table; GREE notes that multi-zone codes can differ by indoor unit type.

Related troubleshooting

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

Reset note

Clean the indoor filters, keep return and supply air paths open, and clear leaves, snow, or loose debris from around the outdoor unit without removing cabinet panels. Restore power once. Expected result: if airflow was the cause, the code clears; if it returns, stop there.

Manual trigger

E4 means the compressor discharge temperature is too high.

Related codes

Source

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