The H6 error code appears primarily on Gree mini-splits and indicates an indoor fan motor fault — specifically, the indoor unit's fan motor has stopped rotating or is not providing speed feedback to the control board. On some other brands, similar fan motor faults appear as different codes (A6 on Daikin, E3 on Mitsubishi, F5 on LG). This guide covers what H6 means, what causes it, and what to do.
Compatible with all brands of ACs and Mini-Splits
Automate Climate Management
Control remotely
Reduce Energy Consumption
Monitor bills in realtimeKlima - Smart Home Thermostat for Mini-splits, Air Conditioners and Heatpumps
What H6 Means
On Gree mini-splits, H6 means the indoor fan motor is not operating correctly. The control board sends a command to the fan motor, monitors feedback from the motor's Hall sensor (which reports rotation speed), and if no rotation is detected or speed is outside the expected range, the system shuts down and displays H6.
Equivalent Fan Motor Codes on Other Brands
| Brand | Indoor Fan Motor Fault Code |
|---|---|
| Gree | H6 |
| Daikin | A6 |
| Mitsubishi | E3 (indoor fan motor) |
| LG | Indoor fan motor — model-specific code |
| Panasonic | H19 |
| Midea / Pioneer / MrCool | E3 (outdoor) / model-specific for indoor |
Common Causes of H6
| Cause | DIY Check? | Action |
|---|---|---|
| Foreign object jammed in fan blades | Yes | Power off at breaker; open front panel; inspect fan blades for debris |
| Fan blade ice accumulation | Yes | Turn off unit; allow ice to melt; clean filter; restart |
| Fan motor capacitor failure | No | Call technician — capacitor replacement required |
| Fan motor bearing failure | No | Call technician — motor replacement required |
| Hall sensor or wiring fault | No | Call technician — sensor or PCB diagnosis |
What to Check Yourself
Step 1 — Turn off at the breaker. Do not open the front panel with power on.
Step 2 — Open the front panel and inspect the fan. Look for any visible object (insect nest, debris, ice) that could be blocking the fan blades from rotating.
Step 3 — Try to rotate the fan blade by hand. With power off, the fan wheel should rotate freely with light finger pressure. If it is stiff, grinding, or completely locked, the motor bearings have likely failed.
Step 4 — Reset and test. If no obstruction was found, restore power, wait 3 minutes, and test. If H6 returns immediately, the motor or its control circuit needs technician attention.
Frequently Asked Questions
My Gree shows H6 — how much does it cost to fix?
If the cause is a jammed object, the fix is free. If the indoor fan motor needs replacement, parts typically cost $60–$150 and labour $100–$200 depending on your area, for a total repair of $150–$350. If the control board is faulty, costs can reach $200–$400 for parts and labour.
Related reading:
→ Mini-Split Error Codes: Complete Guide by Brand
→ Mini-Split Making Noise: What Each Sound Means
→ Mini-Split Repair Cost: What to Expect in 2026
Klima - Smart Home Controller for Mini-splits, Air Conditioners and Heatpumps
Compatible with all brands of ACs and Mini-Splits Automate Climate Management Control remotely Reduce Energy Consumption Monitor bills in realtime
Try NowRecent Articles
Mini-Split Compressor Short Cycling: Causes and Fixes
Short cycling in a mini-split compressor — where the compressor tur...
Read More
Mini-Split for Sunporch: Sizing and What You Need to Know
A sunporch, sunroom, or three-season room is one of the most reward...
Read More
Mini-Split for Attic: Sizing, Placement and Drainage Guide
Installing a mini-split to heat and cool a finished attic space is ...
Read More
Mini-Split vs PTAC Unit: Which Is Better for Your Space?
Mini-splits and PTAC (Packaged Terminal Air Conditioner) units are ...
Read More
Mini-Split for 2-Car Garage: Sizing and Best Options
A two-car garage is one of the most common spaces where homeowners ...
Read More