"E1" Error Code on Dometic CCC2 Thermostat
My Penguin II rear air started cycling on/off & then I got "E1" code on my 12-button CCC2 thermostat for both of my two AC zones. I was able to clear the E1 code doing a CCC2 reset per the install ...
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90% of the time , an end on the data cable is bad. Easy enough to replace- pay attention to polarity, it's different than a phone cable.
