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Old 03-21-2021, 06:33 PM   #1
Join Date: Jul 2019
Location: Cary, NC
Posts: 89
2005 Diplomat - Only one A/C at a time?

Our new 2005 Monaco Diplomat has 2 A/C units front and rear and 50 amp service. According to the owner's manual I cannot use Front and Rear at the same time - I need to select one zone. Is there a way to run both A/C units simultaneously? How do I do that?

2005 Monaco Diplomat 40 DST
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Old 03-21-2021, 10:26 PM   #2
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On my 2000 Diplomat you start the A/C in one zone and then switch to the other zone and turn the other A/C on. At that point, they both run.

I would have thought that, if anything, being 5 years newer, yours would be even better?
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Old 03-22-2021, 05:38 AM   #3
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Maybe the owner's manual is saying that you can only run one AC when on 30Amp hookup?

The 30 A shore cord I got with the coach was pretty well fried at the connectors. I'm guessing someone tried to run both ACs at the same time on 30A.

Edit: I looked at the on-line 2005 Diplomat Owner's Manual and don't see any mention that only one unit can run. Page 154 describes the operation. There is a 2 minute delay for the compressor to kick in.
2004 Holiday Rambler Imperial 40PKD, Cummins ISL 400
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