The Hexacopter climbs up with the Altitude mode

Hi, Guys.

I have a hexacopter. It had a good altitude mode flight with the Ardupilot.
Recently, I start to use the PX4 to learn developing.

I did uploading PX4 and had a flight.
The manual mode has no problem but my hexacopter is rapidly climb up with Alt mode.

What is wrong?
Thank you!

Please post the log file otherwise we cannot help.

Thank you for reply!

I found that radio transmitter setting was wrong.
Throttle curve.

If some guys has a problem like that please check the transmitter setting!