Need more info. You have a 2003 Newmar. The Penguin 2 came with a 12 button CCC tstat module board. Your RV has a 5 button CCC tstat and the other AC has the 5 button Module board. When you install a Penguin 2 with a 12 button module, you must purchase a 12 to 5 button conversion kit and install it on the Penguin 2. IF that was not done then you will have operational problems. Newmar usually installed Heat Pumps back then(2003). The Older HP's had only lo and hi fan speeds. The Medium speed terminal was used to activate the reversing valve for the HP. The Penguin 2 units now have 3 fan speeds and a separate wire for the reversing valve.
1. They did not install the 12 to 5 button kit as required
2. They did install it but miswired it. Doug
Reread your post. Did Newmar offer and install the Intellitec EMS system your year model? If so, they may have miswired the Penguin 2 EMS control wires since the Unit operates OK on APU but not on shore power.
