E1
Gree Split AC
Severity: ModerateWhat Does This Error Mean?
E1 means the refrigerant pressure inside the system has exceeded safe limits. The AC shuts itself down to protect the compressor from damage. Clean the outdoor unit and restore clear airflow — that resolves most E1 faults.
Affected Models
- Gree FAIRY Series
- Gree LOMO Series
- Gree U-MATCH Series
- Gree PULAR Series
- Gree Inverter Split System
Common Causes
- Dirty outdoor condenser coil blocking heat from escaping
- Outdoor fan motor not running or running too slowly
- Refrigerant overcharge — too much refrigerant in the system
- Blocked airflow around the outdoor unit (walls, furniture, overgrowth)
- Outdoor ambient temperature extremely high combined with restricted airflow
How to Fix It
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Turn off the AC at the thermostat and let it rest for 30 minutes.
Allowing the system to cool down resets the high-pressure cutout and prevents further stress on the compressor.
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Go to the outdoor unit and check that nothing is blocking the airflow — clear any leaves, debris, or overgrown plants within 60 cm of the unit.
The outdoor unit needs free air circulation on all sides to reject heat effectively.
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Inspect the outdoor condenser coil fins (the metal grid on the sides of the unit). If they are clogged with dust or dirt, rinse them gently with a garden hose on a low setting.
Blocked fins trap heat inside the coil, causing pressure to rise. Never use a pressure washer — it bends the delicate fins.
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Check that the outdoor fan is spinning when the AC runs. Turn the unit on and watch the top fan through the grille.
If the fan is not spinning or is slow, the outdoor unit cannot cool the refrigerant — this causes immediate high pressure.
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Restart the AC and monitor for 10 minutes. If E1 returns, switch the AC off and call a technician.
A recurring E1 after cleaning suggests a refrigerant overcharge or a faulty high-pressure sensor, both of which require professional tools.
When to Call a Professional
Call a technician if cleaning the outdoor coil and clearing airflow does not resolve E1. Refrigerant overcharge must be corrected by a licensed technician with recovery equipment. Do not add refrigerant yourself — overcharge makes this error worse.
Frequently Asked Questions
Can I run the AC with an E1 error showing?
No — E1 shuts the compressor down to prevent damage. Running it in this state can destroy the compressor, which is the most expensive part. Fix the underlying cause before restarting.
Why does E1 happen more in summer?
High outdoor temperatures make it harder for the condenser to reject heat. Combined with a dirty coil or blocked airflow, the pressure can tip over the safety limit. Keeping the outdoor unit clean is the best prevention.
How often should I clean the outdoor unit to prevent E1?
Clean the outdoor condenser coil at least once a year — ideally before summer. If you live in a dusty or leafy area, check it every 3 months. A quick rinse with a garden hose takes only a few minutes.