How to Troubleshoot an RC EDF

Clear a workspace and set your model in front of you. Verify that your EDF unit is the problem by testing the other systems on your plane. Check the transmitter and receiver. Check the battery in the plane and in the transmitter. Check all wired connections, paying special attention to the connections between the receiver, battery and electronic speed controller (ESC). Power up your model and try the throttle again. If the EDF does not respond, then power down.

Remove the EDF access hatch, then remove the entire EDF unit without disconnecting it. Look it over for any visual signs of trouble. Power up your radio and airplane. Firmly hold the EDF unit in one hand and slowly advance the throttle to 1/4 power. Watch and listen for any obvious signs of trouble. Power down.

Disconnect the EDF from the model. Disassemble it by loosening and removing the rotor cone. Remove the rotor, collet and threaded shaft. Unscrew the motor and remove it. Examine all parts of the unit including the motor wires and replace any parts that are obviously damaged. Use the compressed air to remove any dust or dirt particles from the EDF parts. If any of the parts are very dirty, use a cloth to wipe them clean and apply lubricating oil where needed.

Reassemble the EDF unit. Connect the unit to the ESC, power up and make sure it works. Reinstall the EDF in the model and close the hatch.

Perform a full preflight check of your model before flying it again.