What is the EE message on the DuoTherm Comfort Control Center?

sounds like defective t-stat or it needs to have time and setpoints reconfigured

EE- High Pressure problem.

You need to check the cable that connects the Comfort Control to the upper unit. This cable has four wires and should have continuity through all wires. If there is a break in one of the wires or a short, it will cause the CCC to fail and report an error. If all this is fine, then you have a bad control unit in the main unit. Try unplugging the rear unit from the control board and then resetting the Tstat, if this works, then there is a communication problem between the front AC control board and the rear AC control board or the rear control board is bad. Check the cable between the front and rear AC for OK. If it is alright, then you have a bad control unit in the front unit.

Another quick check is to remove the inner shroud from the front unit pull down the control box. Remove the access cover and view the dip switch panel located inside. It should be labeled Zone 1 Zone 2 etc...try turning off Zone 2 and furnace and resetting the tstat. If this works then turn zone 2 on and reset the tstat. If this is ok, then turn the furnace on and reset again. If this works, then all should be ok. If one of these fails, then you can pinpoint the problem there and move forward.

Hope this helps,

Jeff

Rate me please!!!

What type of Thermostat is this? If it is a Comfort Control Center, four or five button, then turn off the thermostat, hold down the mode and zone buttons at the same time and turn the tstat back on. When EE appears on the screen, then release the button and see if it begins to work. If not, then we need to check the control unit in the AC. Hopefully it is just a simple reset.

The thermostat needs to be reset. Turn it off and hold the top and bottom buttons in at the same time and turn the thermostat on. In a few seconds will read FF and you should be good to go.

I have a dometic duo-therm. The unit works great and fan blows strong and both high and low work., but air is coming out of the ceiling unit rather than the duct work. The bedroom unit works OK, but the air is strong out of one duct, and not much comes out of the others. The front unit only has air coming out on the A/C unit and none out of the ducts.

Possible faulty control electronics. Call a repairman.