Forum › Forums › Stairlifts › Acorn 180. 2 horizontal lines on the display. This topic has 1 reply, 1 voice, and was last updated 6 years ago by okmobility. Acorn 180. 2 horizontal lines on the display. ricardo-a-abrilMember September 26, 2017 at 1:16 am Good day. Replaced batteries and gave this signal: 2 horizontal lines one at the top the other at the bottom of the display. Any ideas? First time for me on the Acorn curved. Thanks and cheers from Mexico okmobilityMember September 26, 2017 at 3:35 pm It needs to be programmed to find the top of the stairlift. It is simple process. Find out on other posts here or check out this article: http://okprops.com/how-to-problem-solve-an-acorn-180-or-bison-80-stairlift/ Viewing 1 reply thread You must be logged in to reply to this topic.