i have had this problem with a couple of different cures. one is as e-man says, make sure the sensors are aligned correctly, if not the can intermittently turn on and off which causes the relevel fault. i have aligned a cleaned the sensors and move them away from each other as far as possible to still keep floor level. the other times i have had this i had to replace the lu and ld sensors to eliminate this, this is what i did the last time i had this problem, kept coming in about 1-2 times a week. replaced the sensors and no further trouble. Curious as to what US reset is also, worked on a bunch of these, been through the manuals plenty of times, and never saw anything mentioning US reset.