Seems @castletonia may be of great help from reading. I have a 2005 Calder Hawaiian. Free with non working topside. Discontinued so replaced with 76838 main and 76848 topside. Wiring all correct. Upon power up, no display on the topside, seems to run jets and blower for a min and cuts. Lights flashing. I have software update on usb. Not really sure what’s going wrong. Attached some photos. Hoping someone can help!