Gree Aircon F1 Error Code
Use this Gree F1 error code guide to capture the fault correctly and see what should be checked before parts are quoted. Match the model first; same-looking codes can point to different rows.
What does Gree F1 mean?
Gree F1 is listed as indoor ambient temperature sensor fault, malfunction of evaporator temperature sensor, and malfunction of High Pressure Sensor (Wiring Diagram:SP1) (Connector:CN425 Red) in mixed model-family source rows, including Ultra Heat GMV6 Mini VRF (2024), MultiPRO / GMV VRF II R410A, Multi ECO R32 multi-zone, and All Match floor / ceiling R32. The loaded row is source-backed by official 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 matching source row
The same visible code has more than one source-backed meaning. Match the model family, system type, or reporting unit before approving parts.
| Code | What it means | What to check first |
|---|---|---|
| GREE common mini-split support rows | Indoor ambient temperature sensor fault | Match this row to the installed model or reporting unit, then use the source-specific checks below. |
| U-Match duct type | Malfunction of evaporator temperature sensor | Match this row to the installed model or reporting unit, then use the source-specific checks below. |
| Ultra Heat GMV6 Mini VRF (2024) | Malfunction of High Pressure Sensor (Wiring Diagram:SP1) (Connector:CN425 Red) | Match this row to the installed model or reporting unit, then use the source-specific checks below. |
| MultiPRO / GMV VRF II R410A | Malfunction of high-pressure sensor | Match this row to the installed model or reporting unit, then use the source-specific checks below. |
| Multi ECO R32 multi-zone | Indoor ambient-temperature sensor open or short circuit | Match this row to the installed model or reporting unit, then use the source-specific checks below. |
| All Match floor / ceiling R32 | Indoor ambient-temperature sensor fault | Match this row to the installed model or reporting unit, then use the source-specific checks below. |
- Code
- GREE common mini-split support rows
- What it means
- Indoor ambient temperature sensor fault
- What to check first
- Match this row to the installed model or reporting unit, then use the source-specific checks below.
- Code
- U-Match duct type
- What it means
- Malfunction of evaporator temperature sensor
- What to check first
- Match this row to the installed model or reporting unit, then use the source-specific checks below.
- Code
- Ultra Heat GMV6 Mini VRF (2024)
- What it means
- Malfunction of High Pressure Sensor (Wiring Diagram:SP1) (Connector:CN425 Red)
- What to check first
- Match this row to the installed model or reporting unit, then use the source-specific checks below.
- Code
- MultiPRO / GMV VRF II R410A
- What it means
- Malfunction of high-pressure sensor
- What to check first
- Match this row to the installed model or reporting unit, then use the source-specific checks below.
- Code
- Multi ECO R32 multi-zone
- What it means
- Indoor ambient-temperature sensor open or short circuit
- What to check first
- Match this row to the installed model or reporting unit, then use the source-specific checks below.
- Code
- All Match floor / ceiling R32
- What it means
- Indoor ambient-temperature sensor fault
- What to check first
- Match this row to the installed model or reporting unit, then use the source-specific checks below.
What to do now
Use these steps before customer action, a sensor check, or PCB quote.
Treat it as a fault signal
If the matching model-family source row applies to F1, do not reset it; record the code and arrange diagnosis. Confirm the matching source row before taking action on another model family.
Match the F1 family before taking action
Capture the F1 display and model sticker first. For the matching model-family source row, 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
F1 error code, a clear display photo, Gree indoor and outdoor model stickers, the selected family/source row, the controller or unit that reported the code, affected rooms and observed symptoms, and result of the matching manufacturer-listed customer action, if any
Source-specific guidance
These diagnostic-reference notes help match the code to the exact model. Electrical, refrigerant, wiring, resistance, and component checks are technician work, not DIY steps.
| Source detail | What it says |
|---|---|
| Diagnostic note | Arrange indoor room-sensor and connector checks if the code returns after one reset. |
| Diagnostic note | Check the indoor evaporator sensor and harness, especially if the unit short-cycles or freezes. |
| Diagnostic note | Record the exact code, whether it appeared on the wired controller or outdoor board, the installed GMV6 Mini model, and the operating state. Do not repeat resets or open electrical or refrigerant components; use the matching service section or arrange qualified diagnosis. |
| 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 Ultra Heat GMV6 Mini service-manual row created in 2024. It applies only to the named 208/230 V GMV6 Mini family when the installed model and matching manual agree; it is not claimed as every Gree GMV, GMV5, or Singapore-market code. |
- Source detail
- Diagnostic note
- What it says
- Arrange indoor room-sensor and connector checks if the code returns after one reset.
- Source detail
- Diagnostic note
- What it says
- Check the indoor evaporator sensor and harness, especially if the unit short-cycles or freezes.
- Source detail
- Diagnostic note
- What it says
- Record the exact code, whether it appeared on the wired controller or outdoor board, the installed GMV6 Mini model, and the operating state. Do not repeat resets or open electrical or refrigerant components; use the matching service section or arrange qualified diagnosis.
- Source 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.
- Source 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.
- Source detail
- Singapore / model note
- What it says
- Official Gree Ultra Heat GMV6 Mini service-manual row created in 2024. It applies only to the named 208/230 V GMV6 Mini family when the installed model and matching manual agree; it is not claimed as every Gree GMV, GMV5, or Singapore-market code.
What to check before repair
Choose the matching source-family row first, then use only that row's diagnostic branch and customer-action boundary.
| You can check | Technician should confirm |
|---|---|
| Before taking any action on F1, take a clear display photo. | Match F1 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 indoor ambient temperature sensor fault; require measured evidence before quoting parts. |
| If the matching model-family source row 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 malfunction of evaporator temperature sensor; 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 malfunction of High Pressure Sensor (Wiring Diagram:SP1) (Connector:CN425 Red); 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 malfunction of high-pressure sensor; 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 indoor ambient-temperature sensor open or short circuit; 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 indoor ambient-temperature sensor fault; 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 F1, take a clear display photo.
- Technician should confirm
- Match F1 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 indoor ambient temperature sensor fault; require measured evidence before quoting parts.
- You can check
- If the matching model-family source row 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 malfunction of evaporator temperature sensor; 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 malfunction of High Pressure Sensor (Wiring Diagram:SP1) (Connector:CN425 Red); 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 malfunction of high-pressure sensor; 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 indoor ambient-temperature sensor open or short circuit; 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 indoor ambient-temperature sensor fault; 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 indoor ambient temperature sensor fault on the matching Gree system. Approve repair or replacement parts only after that branch has measured evidence for F1. U-Match duct type: diagnose malfunction of evaporator temperature sensor on the matching Gree system. Approve repair or replacement parts only after that branch has measured evidence for F1. Ultra Heat GMV6 Mini VRF (2024): diagnose malfunction of High Pressure Sensor (Wiring Diagram:SP1) (Connector:CN425 Red) on the matching Gree system. Approve repair or replacement parts only after that branch has measured evidence for F1. MultiPRO / GMV VRF II R410A: diagnose malfunction of high-pressure sensor on the matching Gree system. Approve repair or replacement parts only after that branch has measured evidence for F1. Multi ECO R32 multi-zone: diagnose indoor ambient-temperature sensor open or short circuit on the matching Gree system. Approve repair or replacement parts only after that branch has measured evidence for F1. All Match floor / ceiling R32: diagnose indoor ambient-temperature sensor fault on the matching Gree system. Approve repair or replacement parts only after that branch has measured evidence for F1.
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.
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 F1 questions
What does the Gree F1 error mean?
Can I fix a Gree F1 error myself?
Is it safe to keep running the aircon with an F1 error?
What causes a Gree F1 error?
Will a Gree F1 error need a repair or a full replacement?
What should I send a technician about a Gree F1 error?
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