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Old 06-19-2015, 10:25 AM   #1
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Monaco Owners Club
Join Date: Jan 2007
Location: Currently in Texas until COVID subsides and we feel more comfortable traveling.
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"Balancing" AC levels

Our '09 Camelot has three AC units: bedroom, mid coach, and front of coach. We normally spend summers where its cool, this year family has us in Texas. Daytime temps are around 95 degrees.

To keep the coach comfortable in the daytime, I have to set the thermostat to 67, 72, and 75 (front, mid and rear). Even at that, the front runs less than the mid. And if I set the front higher to say 72 it never comes on at all.

But if I leave the front set to 67 at night, the front will run and run until it gets too cold in the front.

Anyone have any good suggestions for me to try to improve the balance between the 3 AC units? I have cleaned all the coils and evrything seems to be OK otherwise....

== John
2015 Entegra Aspire 44B
2017 GMC Acadia Denali, M&G braking, Blue Ox
Full-timing since 2008
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Old 06-19-2015, 10:50 AM   #2
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Ford Super Duty Owner
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Location: Austin, TX
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Originally Posted by JohnCamelot View Post
Our '09 Camelot has three AC units: bedroom, mid coach, and front of coach. We normally spend summers where its cool, this year family has us in Texas. Daytime temps are around 95 degrees.
You know it's been a really cool summer as far as Texas goes?

I assume your ACs are ducted? If so, the ducting is probably shared between units. If not, ignore the rest of my post.

We have to balance with a combination of adjusting the outlets on the ducts and thermostat. Generally in TX, we leave the AC fans on - otherwise they simply cycle too much and the the compressor do it's thing.
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Old 06-21-2015, 05:06 AM   #3
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It more depends on where the thermostats get their info. Our front AC uses the front thermostat installed in the front of the hallway, the sensor not very representative of the actual temp in the front of the coach, so I installed a remote thermistor just behind the copilot's seat to more realistically read the temp in the front. It was easy to do, there is a plug available at the inside of the AC unit that the thermistor plugs into and then I ran the wire through the duct, and finally to the spot where I mounted it. Our middle AC gets its temp reading from inside the toilet compartment, a great spot for our middle zone of heat, makes for a cozy cubicle, but not so hot for AC. We just accept the temp setting to be higher for comfortable AC, and we leave the door ajar when cooling. Then our bedroom thermostat input is from a thermistor that is on a bulkhead near the passenger side window, also not the best for AC, so we pull down a shade in that window to keep the sun off if the awning isn't down. Also as the sun moves around the coach, obviously the heating impact will change each individual AC's effectiveness. So with some experimentation we are comfortable.
Bill B
2007 Navigator, 45' Series 60
Full-Timing since 2004
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