For those reading this with a NorCold 12xx: As DSDP Don said, there are two different thermistors and yes I bought the correct one as a spare several years ago for $15. It's easy enough to check your thermistor by holding the Temp and Mode buttons down until you get 1 and then using the Mode go to #3 where it will show the temp of your fins.
I found a NorCold PN 628661 control board on Ebay for $100. Should be here this week.
My inverter/Charger is a Xantrex Trace RV2012 2000W and there really is a 33% reduction in charger output using the generator and I'm not the only one with this problem. If my charger would put out 70 amps for more than 15 minutes that would be fine but at 40 amps it takes three hours to get to float charging on a 800AH battery bank from more than 50%. Another 04 Dynasty owner's numbers were even worse and installing a PSW I/C solved the problem. Granted I can buy a lot of diesel instead of an new bigger I/C but in most of the places I stay, I already stick out.
