- HVAC
- Air conditioner
E1
Gree E1 on an air conditioner: high pressure protection
Risk level
High
Professional inspection is recommended.
Urgency
Medium
Quick answer
On Gree split units, E1 is the system high pressure protection: in cooling everything stops except the indoor fan, and in heating the unit stops. Clear the outdoor unit without opening it and, if E1 stays, call a professional.
Safety first
Stop and check this first
- Gree asks you not to repair or modify the unit yourself. If the power cord overheats, there is abnormal noise, the breaker trips often, there is a burning smell or the indoor unit leaks, switch off, disconnect the power and call the dealer or a qualified professional.
- This Gree Sapphire circuit uses R410A under pressure. Charging and recovering refrigerant is work for a technician with an F-gas certificate.
Safe checks you can perform
- Code on the indoor unit display
- Outdoor unit surroundings
- Heat exchanger and refrigerant charge
Leave these tasks to a qualified professional
- Do not attempt this professional task: Test run in the mode that failed
- Do not attempt this professional task: Rule out heat exchange before the charge
What a technician must be able to justify
Technician visit
These are the steps they must carry out and show you. Tick them as they work: if steps are skipped, do not accept a part swap.
These are not instructions for opening or handling the equipment yourself. They are the checks that should support a technical conclusion.
Test run in the mode that failed
What they doAfter the work the technician runs the unit in the mode where E1 appeared long enough to check the protection does not return.
They must show youthe unit running without E1.
In writingdate, mode tested and result.
Rule out heat exchange before the charge
What they doThe technician checks heat exchanger cleanliness and ventilation before measuring or changing the refrigerant charge.
They must show youheat exchanger photos and the charge measurement.
In writingwhat was cleaned, how much refrigerant was recovered, if any, and why.
Before accepting a part or repair
Nothing has been shown yet. Do not accept a part swap based on the code alone.
Follow these steps
Note: Follow the documented order. An error code identifies the affected system, but it does not prove by itself which part has failed.
Code on the indoor unit display
- Who:
- you.
- How:
- look at the indoor unit display: Gree shows the code on the temperature indicator, which blinks when there is an abnormality.
- Result that matters:
- that the code is E1.
- If it is E1:
- it is the high pressure protection; carry on with this page.
- If it is E2:
- Gree says it is not an error but the evaporator anti-freezing status.
- Evidence to keep:
- a photo of the display with the code, date and time.
Evidence: Gree Sapphire installation, service and troubleshooting manual, SAP18HP230V1AH/AO and SAP24HP230V1AH/AO · Gree mini split air conditioner installation and owner's manual, Vireo Plus Ultra
Outdoor unit surroundings
- Who:
- you.
- How:
- without opening anything, look for objects, leaves, plastic or dirt covering the air inlet or outlet of the outdoor unit, or whether it is boxed in.
- Result that matters:
- that air can flow in and out freely, because Gree lists poor heat shedding among the causes of E1.
- If it was blocked:
- clear it without opening the unit; if E1 returns, call a professional.
- If it is clear:
- it points to internal dirt or the refrigerant charge: technician work.
- Evidence to keep:
- a photo of the outdoor unit before and after and the day's temperature.
Evidence: Gree Sapphire installation, service and troubleshooting manual, SAP18HP230V1AH/AO and SAP24HP230V1AH/AO
Heat exchanger and refrigerant charge
- Who:
- an F-gas certified air conditioning technician.
- How:
- checks how clean the heat exchangers are and checks the refrigerant charge against the rating plate.
- Result that matters:
- whether dirt blocks heat exchange or there is too much refrigerant.
- If the heat exchanger is dirty:
- it is cleaned and the test repeated before touching the circuit.
- If the charge is too high:
- it is corrected with certified refrigerant recovery.
- Evidence to keep:
- a job sheet with heat exchanger photos and the charge checked.
The refrigerant circuit and the R410A charge are only for a certified technician.
Evidence: Gree Sapphire installation, service and troubleshooting manual, SAP18HP230V1AH/AO and SAP24HP230V1AH/AO
Still not solved
If the error persists, stop here. See what the technician must do and show you.
Where this code applies
A code is meaningful only inside the right product and version context.
Primary scope
- System
- HVAC
- Brand
- Gree
- Product type
- Air conditioner
Known code variants
- aire acondicionado Daikin E1
- climatisation Daikin E1
- climatizzatore Daikin E1
- code erreur E1 Daikin
- codice E1 Daikin
- código E1 Daikin
- Cointra E1
- Daikin AC E1
- Daikin E1
- Daikin error E1
- Daikin Fehler E1
- Daikin Fehlercode E1
- Daitsu E1
- DDSX225 E1
- De'Longhi dehumidifier E1 probe
- De'Longhi E1
- DeLonghi Tasciugo E1
- deshumidificador De'Longhi E1 sonda
- deshumidificador Meaco E1
- DEXD216F E1
- E01
- E 1
- Er1
- error E1 Daikin
- error E1 frigorífico Hotpoint
- error E1 lavavajillas Fagor
- error E1 lavavajillas LG
- errore E1 Daikin
- Fagor 3LVF-623.1 E1
- Fagor dishwasher E1
- Fagor dishwasher error E1
- Fagor dishwasher not filling E1
- Fagor lavavajillas E1
- frigorífico combi Hotpoint E1 sensor
- Gree E1
- Haier E1
- Hotpoint E1 error fridge freezer
- Hotpoint E1 frigorífico
- Hotpoint fridge freezer E1
- Hotpoint fridge freezer E1 sensor fault
- Klimaanlage Daikin E1
- lavavajillas Fagor no coge agua E1
- lavavajillas LG aquastop E1
- lavavajillas LG fuga E1
- lavavajillas LG no coge agua E1
- LG dishwasher aquastop E1
- LG dishwasher E1
- LG dishwasher error E1
- LG dishwasher float switch E1
- LG dishwasher leak E1
- LG lavavajillas E1
- Meaco 12L E1
- Meaco dehumidifier E1
- Meaco E1
- MeacoDry Arete E1
- panne E1 Daikin
- TND 100 E1
- TND 150 E1
- TND 50 E1
- TND 80 E1
- TND E1
What it means
Gree triggers E1 when the control detects high pressure in the refrigerant circuit. In cooling and drying all loads stop except the indoor fan; in heating the complete unit stops. Gree gives as possible causes too much refrigerant, poor heat exchange from dirt blocking the heat exchanger or surroundings that do not shed heat, and an ambient temperature that is too high. The code does not say which one it is: the technician separates them.
Warnings and stop conditions
- Highsource verified
Gree asks you not to repair or modify the unit yourself. If the power cord overheats, there is abnormal noise, the breaker trips often, there is a burning smell or the indoor unit leaks, switch off, disconnect the power and call the dealer or a qualified professional.
Evidence: Gree mini split air conditioner installation and owner's manual, Vireo Plus Ultra
- Highsource verified
This Gree Sapphire circuit uses R410A under pressure. Charging and recovering refrigerant is work for a technician with an F-gas certificate.
Evidence: Gree Sapphire installation, service and troubleshooting manual, SAP18HP230V1AH/AO and SAP24HP230V1AH/AO
Symptoms and causes
Probable causes · in order
- Poor heat exchangePossible
Gree includes dirt blocking the heat exchanger and surroundings where the unit cannot shed heat. It is the only cause you can see without tools.
Evidence: Gree Sapphire installation, service and troubleshooting manual, SAP18HP230V1AH/AO and SAP24HP230V1AH/AO
- Ambient temperature too highPossible
Gree lists it separately. It is suspected if E1 appears in the hottest hours and the outdoor unit is clear and clean.
Evidence: Gree Sapphire installation, service and troubleshooting manual, SAP18HP230V1AH/AO and SAP24HP230V1AH/AO
- Too much refrigerantPossible
Gree lists it as the first possible cause. Only a certified technician confirms it by measuring the charge against the rating plate.
Evidence: Gree Sapphire installation, service and troubleshooting manual, SAP18HP230V1AH/AO and SAP24HP230V1AH/AO
Virtual technician
Does E1 still appear after these checks?
Answer a few questions to narrow down the likely cause and the safest next action. Guidance only - it never replaces a professional.
Sources and technical references
- 1
Gree Comfort · 2022 · manual
- 2
Gree mini split air conditioner installation and owner's manual, Vireo Plus Ultra
Gree Comfort · 2019 · manual
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