Home > Troubleshooting Help > Nano CPX Troubleshooting
Troubleshooting steps for determining if your Nano CPX 3 in 1 is faulty.





Troubleshooting action Did the step work? Action required if yes Did the step work? Action required if no.
1. Turn off throttle hold. Y No action required N Proceed to step 2
2. Inspect 3 in 1 for visibly damaged FETs or other parts Damaged 3 in 1 repair required No damage Proceed to step 3
3. Ensure motors are plugged into the 3 in 1 board correctly Y No action required N Proceed to step 4
4. Test motor by plugging it directly into a proper power source. Stock batteries work well for this. Y Proceed to step 5 N Replace faulty motor and/or motor wiring
5. Do servos respond to TX input? Y Proceed to step 6 N Troubleshoot binding or faulty TX
6. Board failure very likely. Repair 3 in 1 board.




Main or tail runs without commands from TX

Troubleshooting action Did the step work? Action required if yes Did the step work? Action required if no.
Turn transmitter off



1. Inspect 3 in 1 for visibly damaged FETs or other parts Damaged 3 in 1 repair required No damage Proceed to step 2
2. Does motor run immediately when the battery is connected? Y Repair defective 3 in 1 N Proceed to step 3
Turn TX on and bind



3. Does the tail run full power with minimal throttle input from TX? Y Proceed to step 4 N Proceed to step 5
4. Reverse the tail motor plug. Y No action required N Proceed to step 5
5. 3 in 1 board damage possible. Repair board if required.




Board will not bind

Troubleshooting action Did the step work? Action required if yes Did the step work? Action required if no.
Board flashes once approximately every 4 seconds Y Gyro Defective. Go to step 6.
 N Proceed to step 1
1. Attempt to bind the board to TX while holding full right rudder during the entire binding process. Y No action required N Proceed to step 3
2. Attempt to bind board to TX while giving no rudder or aileron commands during the entire binding process Y No action required N Proceed to step 3
3. If using a computerized TX create a new model from scratch and attempt to bind to that model. If using a non computerized TX attempt to bind to a different TX. Y Troubleshoot TX/no action required N Proceed to step 4
4. Place the TX antenna an inch or less from the 3 in 1 and attempt to bind Y Go to step 5
 N Proceed to step 6
5. Perform a range check per your TX instructions.
PassNo further action required
FailTroubleshoot TX or 3 in 1 antenna
6. Place the TX antenna 10' from the 3 in 1 and attempt to bind Y No action required N Proceed to step 6
6. 3 in 1 board damage likely. Repair 3 in 1 board



Heli Falls From the Sky- usually a few seconds to less than 1 min into flight.

Troubleshooting actionDid the step work?Action required if yes
Did the step work?Action required if no.
Once the board falls to the ground is the led flashing 3 times every second or so. Flash-Flash-Flash, Pause, Flash-Flash-FlashY
Proceed to step 1

N
Proceed to step 3
1. Attempt to bind the board to TX while holding full right rudder during the entire binding process. (computer radio bind)YNo further action required

NProceed to step 2
2. Attempt to bind board to TX while giving left rudder or aileron commands during the entire binding process (non-computer radio bind)YNo further action required
NProceed to step 3
3. Are your batteries serviceable? Are they old?
Y
Replace Battery

N
Proceed to step 4
4. If using a computerized TX create a new model from scratch and attempt to bind to that model. Do not move or copy the model. Make it from scratch. If using a non computerized TX attempt to bind to a different TX.YNo further action required
NProceed to step 5
5. Replace main and/or tail motor/s.
YNo further action required
NProceed to step 6
6. 3 in 1 board damage possible. Repair board as required.