mel Posted February 2, 2010 Share Posted February 2, 2010 Hi, I self-installed a Euro Mini about a year ago. I have two keypads installed, one upstairs and one downstairs. It's been working fine since I installed it but now its giving me error 485 COMMNS LOST. Neither of the keypads respond. If I open the panel box or the keypad to fault find, the tamper alarm will sound and I have now way of overriding it! 1. Any ideas what would cause this problem (error 485)? Does the keypad or panel have a keypad fuse? If so would a blown fuse cause this error? 2. Without a working keypad, how do I override the tamper alarm? Thanks in advance. Quote Link to comment Share on other sites More sharing options...
Secware_Tech6 Posted February 3, 2010 Share Posted February 3, 2010 You have a 485 line problem, either hardware or cable. I would disconnect both keypads at the panel and then wire one of them directly to the panel on a short lead. Try both keypads independantly. Quote Link to comment Share on other sites More sharing options...
mel Posted February 3, 2010 Author Share Posted February 3, 2010 Will the SAB sound when I open the panel box? If so, how would I silence the SAB while I'm testing the keypads? Quote Link to comment Share on other sites More sharing options...
Secware_Tech6 Posted February 3, 2010 Share Posted February 3, 2010 If the system is set then yes. If it isnt then the externals should not sound. Quote Link to comment Share on other sites More sharing options...
mel Posted February 3, 2010 Author Share Posted February 3, 2010 Thanks for your reply. Quote Link to comment Share on other sites More sharing options...
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