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Replaced backlight lamps on a Coleman Horizon 411 Spa topside controller, multiconductor flat cable to RJ45 connector conductors had insulation disintegrate at connector on Topside controller PC Board

Powered down spa to replace backlight lamps on topside controller. Had to remove the back cover to access and clean corrosion from the backlight lamp socket connections. Insulation on connectors that was exposed to the atmosphere disintegrated when touched, leaving nothing but bare copper wire strands. Wires literally fell out of connector on PC Board but insulation trapped in the clear conformal coating revealed exactly where each conductor was landed. Redressing the wires, cleaning up the PC Board header where the wires were landed then reconnecting the wires resulted in the backlights working but the control buttons not and no display was visible any longer. Cycling the power off for several minutes and then back on doesn't help. The spa automatically goes into default two hour circulate/heat/clean mode and the remote dual pump control pad works fine. Is there a way to test/reset this main topside controller? Is there a color code lead connection wiring diagram available for the flat cable to the RJ45 connector? Any help would be appreciated.

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SOURCE: hot tub jets won't come on. Backlight on topside works and shows current temp. but jets or led lights in tub won't work. Topside panel buttons are dead. What is problem? Viking Royale spa

This sounds like a back circuit board to us.


Posted on Apr 09, 2013


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