There is a 40 Amp fuse in an "inline fuse holder" in the pink wire on the main landing gear. Some members have reported that they could only raise the landing gear with the remote and found that fuse blown. If you don't know where it is, to find it, follow the pink wire from the landing gear motor (the harness is protected by a split coil wire loom) until you come to a "big bump" in the wire loom. There you should find the inline fuse holder and hopefully a blown fuse... Replace it and you should be good to go.
Now, if this doesn't work for you, I won't send a bill.....
Here are a few threads to get you started:
http://www.keystonerv.org/forums/sho...ghlight=inline
http://www.keystonerv.org/forums/sho...ghlight=inline
Here are pictures of the inline fuse and the 30 amp circuit breaker with the red cover and without the red cover.
The circuit breaker is the smaller of the two red devices. It's the one with the three wires and the buss bar attached to it. Yours will not have the buss bar.