No display on Dometic 5 button system
My 04 Newmar Kountry Star 5th wheel with Dometic 59516.331 AC and Suburban SF3.5 furnace: 1. 13.35VDC on red and black lines of wires behind CCC 2. Replaced 3109228.001 Comfort Control 2x with new...
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You might try replacing the RJ12 connector at the control panel in the AC unit. If you have two AC units or AC/Heat pumps there also a telephone cable running between the to units.
