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Old 02-18-2018, 08:01 AM   #1
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duo-therm 5 button control center

My ac works fine but lost the zone 2. Duo-therm 5 button shows only zone 1 now. I'm not sure when or what changed but both units still heat and cool but I can't control the zones.
Going to try the factory reset again and check connections to see if this helps.
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Old 02-18-2018, 08:46 AM   #2
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Additionally, your first AC has a row of mini switches that indicate whether you have multiple AC units. You could cycle these switches in case one of them has gotten dirty and causes the problem.

Have a nice day - Darrel
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Old 02-18-2018, 09:16 AM   #3
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Where would I find these switches?
I tried the reset and that didn't work. Also cleaned the cable connection and that didn't help.
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Old 02-18-2018, 09:29 AM   #4
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Just a couple of suggestions. First, when I had florescent lights in the MH, I found that if any were on that the 5-button CCC would not reset properly. Turn off ALL florescents before reset!

As you probably know, the thermostat communicates with the A/C's over a telephone-type cable and plugs. Over time the contacts on the plugs can develop a poor connection. Plugging and unplugging them several times will usually correct that!

Good luck, happy trails, and God bless!
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Old 02-18-2018, 09:32 AM   #5
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Quote:
Originally Posted by MSHappyCampers View Post
Just a couple of suggestions. First, when I had florescent lights in the MH, I found that if any were on that the 5-button CCC would not reset properly. Turn off ALL florescents before reset!

As you probably know, the thermostat communicates with the A/C's over a telephone-type cable and plugs. Over time the contacts on the plugs can develop a poor connection. Plugging and unplugging them several times will usually correct that!

Good luck, happy trails, and God bless!
Joe has a good point.The contacts can be cleaned with a pencil eraser.
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Old 02-18-2018, 04:01 PM   #6
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I will give that a try.
Thanks
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Old 02-19-2018, 05:33 PM   #7
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Well I cleaned the connector good and still only shows zone 1.
Zone 1 flashes but you canít get it to change over to zone 2.
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Old 02-19-2018, 08:38 PM   #8
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The programming mini switches are on the first AC. The AC cover has to be removed to gain access. (The 4wire cable connections are in there also.)

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