Dreaded EE code
Hello all, I need help with Ac. I have the 5 button duotherm. I have replaced the thermostat, one communication cable that was bad and the control board. Actually two of them. I have tested both co...
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Stevec4s wrote:
I will have to look closer. It looked like my communication Cable plugs directly to board without union.
Is your Control board in a 8 by 8 inch Galvanized Box? Right in front of the Evaporator? This is important. Depending on the AGE of the penguin determines WHERE the Control board is located. If the control board is MOUNTED and accessed from the TOP of the RV under a flat metal plate that has 2 screws, you will see 2 black 4 wire Com cables connected to the Control Board. THOSE black cables(about 18 inches long) go into the Evap area and have those splice unions that connect to the cable from the wall tstat and then go from the other to the rear Zone 2. ALWAYS disconnect the Rear Zone 2 from the Rear control board at those splice connectors. As I stated, you need to make another Com cable 2 or 3 feet long and do on top and connect the wall tstat direct to Zone 1 Control board with the other Com cables disconnected. Doug
