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3 zone AC problem, 2005 U320, nothing runs

June 13, 2015, 10:17:29 pm

Trying to help a friend with his 2005 U320.  The 3 zone AC with 5 button comfort control center is inop.  All 3 units do not operate.  An attempt to reset the control center results in an "EE" display on the comfort control center--- any thoughts on wha the issue might be---hot and no AC!

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Re: 3 zone AC problem, 2005 U320, nothing runs

Reply #1 – June 14, 2015, 07:24:51 am

Check the connection on the wire to the AC unit in front. It is a phone jack extender and a known failure point.  You might even just plug the control unit right in that line and see if it works as a start. 

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Re: 3 zone AC problem, 2005 U320, nothing runs

Reply #2 – June 14, 2015, 05:08:24 pm

We tried that, no luck so he is dropping his coach off at Foretravel on the way home for repair.

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Re: 3 zone AC problem, 2005 U320, nothing runs

Reply #3 – June 14, 2015, 09:25:21 pm

We had a similar problem.  Fix was a 5 amp fuse on the circuit board in the front AC.  Remove cover, remove metal cover box, find fuse, check.    Maybe?  Roger

Troubleshooting giude.  http://bryantrv.com/docs2/docs/ccc5.pdf

Found this on another forum.... "EE is a data communication error code. As well as low or dirty dc voltage, this error can be bad connections between t'stat and unit, bad t'stat, bad control board."

Try to do a reset as described in the doc above.
HTH

Roger

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Re: 3 zone AC problem, 2005 U320, nothing runs

Reply #4 – June 14, 2015, 09:55:30 pm

Howdy Roger,
 Thanks for this link.  Some good information on this website and I have bookmarked for future.
Dave A

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