To replace the fuse in the controller, use the following steps. The fuse is a 1 amp slow blow fuse.
1.) Open the exterior door and panel on the controller
2.) Locate the fuse compartment. It is a grey cylinder attached to a red wire in the top right of the controller.
3.) Unscrew the fuse compartment and remove the fuse.
4.) Insert the new 1 amp 250 volt (measures 5 x 20 mm) slow blow fuse and screw the fuse compartment back together. See the link below to purchase the fuses through Amazon.