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Hi my name is Robert...
These units can be hard to troubleshoot in person let alone online, click HERE and it will show you how to check the configuration or verify it is set for Direct, then you need to check the switch , it will explain all the testing, if that does not work I might call King Dome direct, there is a number at the bottom of the page. Never been a fan of the king domes as you need a special pad to diagnose.... Hope this helps some... Robert