John Haggard Posted July 17, 2020 Share Posted July 17, 2020 We ordered a 651815HXXICO The box has that # The board has a 75ICO The new unit is now mounted. I have a new ccc2 thermostat coming. The orginal was a 4 button duo therm . The XXICO was to be a plug and play replacement with the new ccc2 thermostat Link to comment Share on other sites More sharing options...
jfbolkovatz Posted July 17, 2020 Share Posted July 17, 2020 It should be plug and play as long as the thermostat controls only one zone. Many of the bedroom thermostats control 2 zones and require another control box. Link to comment Share on other sites More sharing options...
John Haggard Posted July 17, 2020 Author Share Posted July 17, 2020 18 minutes ago, jfbolkovatz said: It should be plug and play as long as the thermostat controls only one zone. Many of the bedroom thermostats control 2 zones and require another control box. Thank you very much jfb Link to comment Share on other sites More sharing options...
Ivan K Posted July 18, 2020 Share Posted July 18, 2020 Is this going to work with the Aquahot zone as well, without additional changes? Link to comment Share on other sites More sharing options...
John Haggard Posted July 18, 2020 Author Share Posted July 18, 2020 Dometic claims they programed this board to be plug and play replacing the 4 butyon duo therm with the 10 button programmable thermostat ccc2. Yes I have the aqua hot This went in the front living area. So only 1 zone on this thermostat. The unit has two phone jack plug s so as to relay the teo. Together in the back .if two new penguin's are added. Link to comment Share on other sites More sharing options...
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