Gree Aircon E1 Error Code: Pressure & Leak Checks

What does Gree E1 mean?

Gree E1 is listed as high-pressure protection, compressor high pressure protection, and high pressure protection of system in fault lists for more than one model family, including Ultra Heat GMV6 Mini VRF (2024), MultiPRO / GMV VRF II R410A, Multi ECO R32 multi-zone, and All Match floor / ceiling R32. This meaning comes from the manufacturer's own diagnostic material. Do not collapse this code across model families; use the model, series, or system type to choose the right row. Confirm the exact model, series, or signal row before accepting a parts quote.

Choose the listing that matches your unit

The same code has more than one listed meaning. Match the model family, the system type and the unit that shows the code before approving parts.

Code, what it means, and what to check first
Code	What it means	What to check first
GREE common mini-split support rows / Ultra Heat GMV6 Mini VRF (2024) / MultiPRO / GMV VRF II R410A / All Match floor / ceiling R32	High-pressure protection	Match this meaning to your installed model and the unit that shows the code, then use the checks below.
U-Match duct type	Compressor high pressure protection	Match this meaning to your installed model and the unit that shows the code, then use the checks below.
Multi GEN2 wall mount	High pressure protection of system	Match this meaning to your installed model and the unit that shows the code, then use the checks below.
Multi ECO R32 multi-zone	High-pressure protection of system	Match this meaning to your installed model and the unit that shows the code, then use the checks below.

Code
GREE common mini-split support rows / Ultra Heat GMV6 Mini VRF (2024) / MultiPRO / GMV VRF II R410A / All Match floor / ceiling R32
What it means
High-pressure protection
What to check first
Match this meaning to your installed model and the unit that shows the code, then use the checks below.
Code
U-Match duct type
What it means
Compressor high pressure protection
What to check first
Match this meaning to your installed model and the unit that shows the code, then use the checks below.
Code
Multi GEN2 wall mount
What it means
High pressure protection of system
What to check first
Match this meaning to your installed model and the unit that shows the code, then use the checks below.
Code
Multi ECO R32 multi-zone
What it means
High-pressure protection of system
What to check first
Match this meaning to your installed model and the unit that shows the code, then use the checks below.

What to do now

Use these steps before customer action, gas work, a pressure check, or parts quote.

Stop using the unit if E1 returns
If the manufacturer's listing for your model family applies to E1, do not reset it; record the code and arrange diagnosis. Check your own model's listing before acting on another model family.
Match the E1 family before taking action
Capture the E1 display and model sticker first. For the manufacturer's listing that matches your model family, record the exact display, installed model, reporting location, and operating state. Do not repeat resets; use the matching GMV6 Mini service section or arrange qualified diagnosis. The same code can mean something different in another model family, so confirm the model before taking another action. Do not treat a generic power-cycle as a manufacturer reset procedure.
Send these to us
E1 error code, a clear display photo, Gree indoor and outdoor model stickers, the model family it matches, the controller or unit that reported the code, affected rooms and observed symptoms, and result of the matching manufacturer-listed customer action, if any

Guidance for your model

Notes that match the code to your exact model. Electrical, refrigerant, wiring, resistance and component checks are for a technician.

Guidance for your model
Detail	What it says
Diagnostic note	Stop repeated restarts. Check outdoor airflow and coil condition, then arrange pressure-side diagnosis if the code returns.
Diagnostic note	Stop repeated restarts. Check outdoor airflow and coil condition before pressure-switch diagnosis.
Diagnostic note	Check outdoor airflow, coil blockage, fan operation, refrigerant charge, and high-pressure condition.
Singapore / model note	Official GREE common mini-split support row. Confirm the exact indoor and outdoor model before treating it as a model-family diagnosis.
Singapore / model note	Official GREE U-Match service-manual row from Table 2-6-1. Use for matching duct, cassette, or floor/ceiling model families before treating it as final.
Singapore / model note	Official GREE Multi GEN2 service-manual row from the malfunction status sheet. Use for matching multi-zone outdoor and connected indoor style before treating it as final.

Detail
Diagnostic note
What it says
Stop repeated restarts. Check outdoor airflow and coil condition, then arrange pressure-side diagnosis if the code returns.
Detail
Diagnostic note
What it says
Stop repeated restarts. Check outdoor airflow and coil condition before pressure-switch diagnosis.
Detail
Diagnostic note
What it says
Check outdoor airflow, coil blockage, fan operation, refrigerant charge, and high-pressure condition.
Detail
Singapore / model note
What it says
Official GREE common mini-split support row. Confirm the exact indoor and outdoor model before treating it as a model-family diagnosis.
Detail
Singapore / model note
What it says
Official GREE U-Match service-manual row from Table 2-6-1. Use for matching duct, cassette, or floor/ceiling model families before treating it as final.
Detail
Singapore / model note
What it says
Official GREE Multi GEN2 service-manual row from the malfunction status sheet. Use for matching multi-zone outdoor and connected indoor style before treating it as final.

What to check before repair

Choose the matching source-family row first, then use only that row's diagnostic branch and customer-action boundary.

Homeowner checks and technician confirmations
You can check	Technician should confirm
Before taking any action on E1, take a clear display photo.	Match E1 to one source-family decoder row before choosing a diagnostic branch.
Capture the Gree model sticker and identify which controller or unit reported the code.	GREE common mini-split support rows: use the matching service procedure to test only the components and conditions named by high-pressure protection; require measured evidence before quoting parts.
If the manufacturer's listing for your model family applies to your unit, record the exact display, installed model, reporting location, and operating state. Do not repeat resets; use the matching GMV6 Mini service section or arrange qualified diagnosis. Confirm the exact model family before taking a different customer action.	U-Match duct type: use the matching service procedure to test only the components and conditions named by compressor high pressure protection; require measured evidence before quoting parts.
	Multi GEN2 wall mount: use the matching service procedure to test only the components and conditions named by high pressure protection of system; require measured evidence before quoting parts.
	Ultra Heat GMV6 Mini VRF (2024): use the matching service procedure to test only the components and conditions named by high-pressure protection; require measured evidence before quoting parts.
	MultiPRO / GMV VRF II R410A: use the matching service procedure to test only the components and conditions named by high-pressure protection; require measured evidence before quoting parts.
	Multi ECO R32 multi-zone: use the matching service procedure to test only the components and conditions named by high-pressure protection of system; require measured evidence before quoting parts.
	All Match floor / ceiling R32: use the matching service procedure to test only the components and conditions named by high-pressure protection; require measured evidence before quoting parts.
	Do not transfer a sensor, drain, valve, fan, compressor, electrical, or reset procedure from one family row to the other.

You can check
Before taking any action on E1, take a clear display photo.
Technician should confirm
Match E1 to one source-family decoder row before choosing a diagnostic branch.
You can check
Capture the Gree model sticker and identify which controller or unit reported the code.
Technician should confirm
GREE common mini-split support rows: use the matching service procedure to test only the components and conditions named by high-pressure protection; require measured evidence before quoting parts.
You can check
If the manufacturer's listing for your model family applies to your unit, record the exact display, installed model, reporting location, and operating state. Do not repeat resets; use the matching GMV6 Mini service section or arrange qualified diagnosis. Confirm the exact model family before taking a different customer action.
Technician should confirm
U-Match duct type: use the matching service procedure to test only the components and conditions named by compressor high pressure protection; require measured evidence before quoting parts.
You can check
Technician should confirm
Multi GEN2 wall mount: use the matching service procedure to test only the components and conditions named by high pressure protection of system; require measured evidence before quoting parts.
You can check
Technician should confirm
Ultra Heat GMV6 Mini VRF (2024): use the matching service procedure to test only the components and conditions named by high-pressure protection; require measured evidence before quoting parts.
You can check
Technician should confirm
MultiPRO / GMV VRF II R410A: use the matching service procedure to test only the components and conditions named by high-pressure protection; require measured evidence before quoting parts.
You can check
Technician should confirm
Multi ECO R32 multi-zone: use the matching service procedure to test only the components and conditions named by high-pressure protection of system; require measured evidence before quoting parts.
You can check
Technician should confirm
All Match floor / ceiling R32: use the matching service procedure to test only the components and conditions named by high-pressure protection; require measured evidence before quoting parts.
You can check
Technician should confirm
Do not transfer a sensor, drain, valve, fan, compressor, electrical, or reset procedure from one family row to the other.

Family-specific repair decision

GREE common mini-split support rows: diagnose high-pressure protection on the matching Gree system. Approve repair or replacement parts only after that branch has measured evidence for E1. U-Match duct type: diagnose compressor high pressure protection on the matching Gree system. Approve repair or replacement parts only after that branch has measured evidence for E1. Multi GEN2 wall mount: diagnose high pressure protection of system on the matching Gree system. Approve repair or replacement parts only after that branch has measured evidence for E1. Ultra Heat GMV6 Mini VRF (2024): diagnose high-pressure protection on the matching Gree system. Approve repair or replacement parts only after that branch has measured evidence for E1. MultiPRO / GMV VRF II R410A: diagnose high-pressure protection on the matching Gree system. Approve repair or replacement parts only after that branch has measured evidence for E1. Multi ECO R32 multi-zone: diagnose high-pressure protection of system on the matching Gree system. Approve repair or replacement parts only after that branch has measured evidence for E1. All Match floor / ceiling R32: diagnose high-pressure protection on the matching Gree system. Approve repair or replacement parts only after that branch has measured evidence for E1.

The model sticker and reporting equipment must match one decoder row before diagnosis begins.
GREE common mini-split support rows: the quote must name the test result that proves this row's fault rather than borrowing a parts list from the other family.
U-Match duct type: the quote must name the test result that proves this row's fault rather than borrowing a parts list from the other family.
Multi GEN2 wall mount: the quote must name the test result that proves this row's fault rather than borrowing a parts list from the other family.
Ultra Heat GMV6 Mini VRF (2024): the quote must name the test result that proves this row's fault rather than borrowing a parts list from the other family.
MultiPRO / GMV VRF II R410A: the quote must name the test result that proves this row's fault rather than borrowing a parts list from the other family.
Multi ECO R32 multi-zone: the quote must name the test result that proves this row's fault rather than borrowing a parts list from the other family.
All Match floor / ceiling R32: the quote must name the test result that proves this row's fault rather than borrowing a parts list from the other family.
Compare repair cost, system age, parts availability, and overall condition only after the family-specific fault is proven.

Gree E1 questions

What does the Gree E1 error mean?

Gree E1 is listed as high-pressure protection, compressor high pressure protection, and high pressure protection of system in fault lists for more than one model family, including Ultra Heat GMV6 Mini VRF (2024), MultiPRO / GMV VRF II R410A, Multi ECO R32 multi-zone, and All Match floor / ceiling R32. This meaning comes from the manufacturer's own diagnostic material. Do not collapse this code across model families; use the model, series, or system type to choose the right row. Confirm the exact model, series, or signal row before accepting a parts quote.

Can I fix a Gree E1 error myself?

No. E1 needs a technician's measurement before parts are decided. Before taking any action on E1, take a clear display photo. Capture the Gree model sticker and identify which controller or unit reported the code.

Is it safe to keep running the aircon with an E1 error?

If the manufacturer's listing for your model family applies to E1, do not reset it; record the code and arrange diagnosis. Check your own model's listing before acting on another model family.

What causes a Gree E1 error?

Gree E1 has a listed meaning that depends on the exact model and on which unit shows the code. Use the decoder on this page before assuming a specific cause.

Will a Gree E1 error need a repair or a full replacement?

GREE common mini-split support rows: diagnose high-pressure protection on the matching Gree system. Approve repair or replacement parts only after that branch has measured evidence for E1. U-Match duct type: diagnose compressor high pressure protection on the matching Gree system. Approve repair or replacement parts only after that branch has measured evidence for E1. Multi GEN2 wall mount: diagnose high pressure protection of system on the matching Gree system. Approve repair or replacement parts only after that branch has measured evidence for E1. Ultra Heat GMV6 Mini VRF (2024): diagnose high-pressure protection on the matching Gree system. Approve repair or replacement parts only after that branch has measured evidence for E1. MultiPRO / GMV VRF II R410A: diagnose high-pressure protection on the matching Gree system. Approve repair or replacement parts only after that branch has measured evidence for E1. Multi ECO R32 multi-zone: diagnose high-pressure protection of system on the matching Gree system. Approve repair or replacement parts only after that branch has measured evidence for E1. All Match floor / ceiling R32: diagnose high-pressure protection on the matching Gree system. Approve repair or replacement parts only after that branch has measured evidence for E1.

What should I send a technician about a Gree E1 error?

Before booking, send: E1 error code, a clear display photo, Gree indoor and outdoor model stickers, the model family it matches, the controller or unit that reported the code, affected rooms and observed symptoms, and result of the matching manufacturer-listed customer action, if any.

Confirm the fault

Share the error code, model number and symptoms so we can assess the likely cause.

Not the right code?

Browse the full Gree list or check a few codes in the same fault category.