Gree Mini Split Error Code H6: Indoor Fan Motor Not Running or No Feedback (Meaning, Causes, Fixes)
What the code means
Gree's service manuals list H6 as an indoor unit hardware fault: "Internal motor (fan motor) do not operate" in the 27 SEER Jasmine manual, "Malfunction of Blocked Protection of IDU Fan Motor" in its troubleshooting section, "Feedback of without IDU motor" on Multi21+ multi-zone heads, and "No feedback of indoor fan motor" on Free Match units. The indoor fan is a DC motor (Gree calls it a PG motor) that reports its speed back to the indoor main board. If the board drives the motor but doesn't see it turning, it sets H6. According to the Jasmine malfunction table, the indoor fan, outdoor fan, compressor and electric heater all stop, and the louver stops where it is. On Free Match units the indicator lamp blinks 11 times. On Multi21+ heads you can view the code by pressing the light button 6 times within 3 seconds.
Likely causes
- The indoor fan wheel (blower) can't turn freely: it's stalled, rubbing the housing, or knocked off-center. Gree's flowcharts start by turning the blades by hand with the power off.
- A loose or poorly connected fan motor plug between the motor and the indoor main board, either the feedback (speed signal) terminal or the control terminal.
- A failed indoor DC fan motor.
- A fault on the indoor main board, including its speed-detecting circuit or the supply voltages it sends to the motor.
Safe DIY checks
The indoor board feeds the DC fan motor around 300 volts DC, and the voltage checks are made with the unit powered. Keep power off for any hands-on checks, and leave live measurements and motor or board replacement to a qualified HVAC technician.
- Switch the unit off at the breaker or disconnect before touching anything inside the indoor unit.
- With the power off, open the front panel and look at the long fan wheel behind the louvers. Gree's first check is whether it turns smoothly by hand; if it's stuck, rubbing, or packed with dust, that alone can cause H6.
- If the wheel is heavily caked with dust or mold, have it cleaned properly (a mini split coil and blower cleaning) rather than forcing it.
- Restore power and try the unit again. If H6 comes back right away and the fan wheel turns freely, the next checks are the motor plug and voltages on the indoor board, which are a job for a technician.
🛠 When to call a pro
- With power off, turn the fan wheel by hand and adjust or reseat the motor and wheel assembly so the rotor runs smoothly (Jasmine and Free Match flowcharts).
- With power off, check the fan motor connector on the indoor main board, both the feedback terminal and the control terminal, and reseat it if it's loose.
- Jasmine flowchart: power up and restart, then measure at the motor interface. Terminals 1 to 2 should read 280 to 310 VDC and terminals 2 to 3 should read 15 VDC, and there should be a voltage between terminals 2 and 4. If any of these is missing, the main board is faulty; replace it with one of the same model.
- Free Match flowchart: within 1 minute after the louvers open, measure the output on the PG motor's control terminal. If it's over 50 V, replace the fan motor; if not, the main board is faulty.
- If the board's outputs are all correct and the motor still doesn't run or report speed, replace the indoor fan motor with one of the same model.
Parts that commonly fix it
Always match the part number to your exact model.
Indoor fan motor (DC blower motor)
Gree's flowchart replaces the motor when the board's outputs check out. It must match your indoor unit's exact model.
Search eBay →Indoor main control board
Replaced when the motor supply or control voltages are missing. Must be the same model; have a technician confirm before ordering.
Search eBay →Sources
- Gree 27 SEER Jasmine mini split service manual (malfunction table: H6 internal motor does not operate, causes; flowchart 'Malfunction of Blocked Protection of IDU Fan Motor H6' with 280-310 VDC and 15 VDC checks)
- Gree Free Match service manual (error list: no feedback of indoor fan motor H6, lamp blinks 11 times; flowchart 'PG motor (indoor fan motor) does not operate (H6)')
- Gree Multi21+ service manual, models MULTI18HP230V1CO / MULTI24HP230V1CO (malfunction status sheet: feedback of without IDU motor H6; viewing codes with the light button)
Last reviewed 2026-10-24. Always confirm against the manual for your exact model number.