- HVAC
- Air conditioner
H6
Gree H6 on an air conditioner: indoor fan motor not running
Risk level
Medium
Proceed carefully and stop if the check is unclear.
Urgency
Medium
Quick answer
On Gree split units, H6 means the indoor fan motor is not running: fans, compressor and heater stop and the louver stays still. Gree says it may clear after a restart; if not, 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.
Safe checks you can perform
- Code on the indoor unit display
- One restart
- Blades, terminal and motor voltages
Leave these tasks to a qualified professional
- Do not attempt this professional task: Measure before replacing motor or board
- Do not attempt this professional task: Test run
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.
Measure before replacing motor or board
What they doThe technician follows Gree's chart: free turning of the blades, motor terminal and connector voltages with a multimeter.
They must show youthe measured voltages against Gree's values.
In writingwhich part was replaced, its model and why.
Test run
What they doAfter the repair the technician runs the unit and checks the indoor fan turns and the louver moves without H6 returning.
They must show youthe fan turning and the louver moving.
In writingdate and result.
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 H6 and the louver has stopped.
- If it is H6:
- Gree links it to the indoor fan motor; carry on with this page.
- If it is another code:
- this page does not apply; look up that code.
- 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
One restart
- Who:
- you.
- How:
- switch the unit off, wait and switch it back on once only. Gree says H6 may clear after a restart.
- Result that matters:
- whether the fan turns again and H6 does not return.
- If it clears:
- note the date; if it happens again another day, tell the technician those dates.
- If it returns:
- Gree asks you to contact a qualified professional; do not keep trying.
- Evidence to keep:
- a note of each occurrence and whether there was noise before the stop.
Evidence: Gree mini split air conditioner installation and owner's manual, Vireo Plus Ultra
Blades, terminal and motor voltages
- Who:
- an air conditioning technician.
- How:
- with the power off, turns the blades by hand and checks the motor terminal; with power on, measures at the motor connector the voltages Gree gives: 280 to 310 V DC between terminals 1 and 2, 15 V DC between 2 and 3, and whether there is voltage between 2 and 4.
- Result that matters:
- whether the fault is mechanical, the connection, the motor or the board.
- If the board voltages are correct:
- Gree concludes the motor has failed.
- If a voltage is missing:
- Gree concludes the main board has failed.
- Evidence to keep:
- a job sheet with the measured voltages and photos of the terminal.
Measured with the board live at mains and high DC voltage: technician only.
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
- Gree H6
- H 6
What it means
Gree shows H6 when the indoor DC fan motor does not run. The indoor fan, outdoor fan, compressor and electric heater stop, and the louver stops where it is. Gree lists as causes poor contact at the motor feedback or control terminal, a stalled fan, a faulty motor or the board circuit that detects motor speed. The code does not say which one: the technician's chart 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
Symptoms and causes
Probable causes · in order
- Stalled fanPossible
Gree starts diagnosis by turning the blades by hand with the power off. If they do not turn smoothly, the problem is mechanical, not electrical.
Evidence: Gree Sapphire installation, service and troubleshooting manual, SAP18HP230V1AH/AO and SAP24HP230V1AH/AO
- Loose motor terminalPossible
Poor contact at the feedback or control terminal of the DC motor. It is told apart because the fault clears when the terminal is reinserted.
Evidence: Gree Sapphire installation, service and troubleshooting manual, SAP18HP230V1AH/AO and SAP24HP230V1AH/AO
- Motor or main boardPossible
Gree separates them by measuring voltages at the motor connector: if the board supplies the right voltages, the motor has failed; if not, the board.
Evidence: Gree Sapphire installation, service and troubleshooting manual, SAP18HP230V1AH/AO and SAP24HP230V1AH/AO
Virtual technician
Does H6 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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