Indoor Fan Motor Not Running (No Speed Feedback)
What it means
This code appears on Gree split air conditioners when the indoor board receives no speed signal from the indoor blower motor, meaning the fan is stopped or its speed feedback is lost. The unit shuts down because running the compressor with no air across the evaporator would freeze it. The same code can mean something else on other brands.
Models covered: Gree split (wall-mounted) air conditioners, mainly inverter models; the code shows on the indoor unit display. Older non-inverter models may show fewer codes.
Symptoms4
- No air, or weak air that then stops, from the indoor unit.
- The code appears about a minute after start-up.
- Rubbing or clicking noise from the indoor unit before the fault in some cases.
- The outdoor unit stops too.
Possible causes5
- Blower wheel jammed by heavy dirt, a foreign object or a worn motor bearing.
- Loose motor or speed-feedback connector on the indoor board.
- Failed indoor fan motor or its internal feedback circuit.
- Blower wheel set screw loose on the motor shaft, so the motor spins alone.
- Faulty motor drive circuit on the indoor board.
How to diagnose4
- With the power off, open the louver and turn the blower wheel by hand: it should spin freely and quietly.
- Look for heavy dirt build-up or a foreign object in the wheel.
- The technician checks the motor connectors on the indoor board.
- The technician tests the motor and speed feedback per the service manual, and substitutes a known-good motor or board if needed.
How to fix5
- Clean the blower wheel and remove any obstruction.
- Tighten the wheel set screw on the motor shaft.
- Reseat connectors or repair the wiring.
- Replace the indoor fan motor with the correct part for the model.
- Replace the indoor board if its drive circuit is proven faulty, then run and confirm the code is gone.
Repair cost
In Saudi riyals; the highlighted part is the expected range for this fault.
In the Saudi market: SAR 100–1,200 (≈ USD 27–320)
Our prices come from the Saudi market, converted at a fixed rate (SAR 3.75 per USD). Prices in your country may differ a lot, so we show the cost level.
Cleaning or tightening the wheel is cheapest; a new motor or indoor board is what raises the cost.
Prices are rough estimates including the part and the technician’s fee, and vary with brand, model and part source.
Prices last updated: September 2026
Frequently asked questions
Could dirt alone cause it?
Yes. Heavy dirt on the blower wheel weighs it down until the board loses the speed signal, and cleaning may be enough.
Why does all cooling stop when the indoor fan fails?
Running the compressor with no airflow freezes the evaporator and can send liquid back to the compressor, so the unit shuts everything down.
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