This code is telling you that there is a lack of communication between the CCC 2 thermostat and the power module boards or an individual power board module. But such is not the case and here are some common Duo-Therm thermostat problems and their solutions: It would be nice if things in this world did not break down and every item on your RV operated as it should no matter how old it was. An error will save you the time and trouble of going out and getting a replacement. The manual provides all the instructions and diagrams you need to see if an error was made in the installation process. If you want very detailed instructions to guide your installation, here is a link to the manual. If not in either case you may have to replace the device. Then if the correct setting doesn't appear on the screen, double-check your configuration to make sure it is set right. Then do a reset system operation and if nothing turns on or there is a problem with the display screen then you know that there is something wrong with the wiring or the thermostat itself. next, you will need to check to see if the DC volts are correct and they should be between 10 and 30 as well as check the polarity. To test the thermostat first make sure the switch is turned to the on position. This option may be more expensive but at least you get guarantees and warranties. You may have thought you were saving money but a refurbished unit usually comes without warranties or guarantees, is badly wired or fixed with inferior parts, etc.Īlways buy new and a DIY option is the cheapest but it is best to have a pro handle the installation. You may find these issues taking place after you bought a refurbished thermostat.
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