Instructions
Fully charge the battery if the airplane does not have sufficient power to fly. This is a relatively simple fix, but one that is vital to do before you look into deeper problems.
Reset the controls with the throttle stick and throttle trim at the lowest setting if you are finding that the airplane responds to all controls except the throttle. This is indicative of the throttle not being at idle or the throttle trim being too high.
Reverse the throttle channel on the transmitter if you continue to have problems with the throttle. This will solve the issue of a reversed throttle channel.
Inspect the unit for a damaged propeller. This could be a common cause for sluggish performance. Replace the propeller with a new, working part.
Visually inspect the wiring on the airplane to check for any loose or frayed wiring. This could be responsible for intermittent problems with power. These damaged wires should be replaced to get your model back in working order.