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Old 07-22-2014, 10:20 AM   #1
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A/C Problems On New 23IKSS

I bought a new Shamrock 23IKSS about four weeks ago, brought it home, had it for about four days and then took it back for the usual laundry list of items to be repaired. (Makes ya wonder why they even do a dealer prep) Anyway, while I had it, I did a little driveway camping for a couple of days and realized that the 13,500 BTU A/C wasn't working well at all. It was around 86 outside and the A/C was barely getting the temp down to 80. I was connected to 30 amp service that I had installed years ago for my Coleman Niagara and the camper was in direct sunlight, but I still thought it should cool down better than that. I asked the Dealer to check it when i took it back in and they are now telling me the A/C passed the 20 degree thermal test and is working fine. I asked what is would cost to upgrade the A/C to the 15k BTU unit and they gave me the cost of a new unit instead of just the difference between the new and old unit. I thought that was completely unreasonable, but they are telling me they can't take the old unit out and reinstall it in another camper since the camper has left the lot and now it is considered "used". They also tried to tell me that a 15k BTU A/C would require 50 amp service vice 30 amp service the current 13,500 BTU A/C uses. I'm no A/C guy nor do I know much about electrical stuff but that sounds like bull to me. Can anyone verify this? I'm about to check out what my options are to just take this thing back; I'm sure I'm pretty much screwed there too though.
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Old 07-22-2014, 11:01 AM   #2
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I don't think it unseasonable at all to not swap it, I woul dnot feel good about being the guy who gets a used AC unit and I would not want to warranty it either unless I knew the history.

Not sure why you would need a 50 AMP service for the 15K but that said you should not need a 15K either.
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Old 07-22-2014, 11:06 AM   #3
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10 DEGREES is about normal.
The main issue is getting rid of the humidity.

Did you try leaving the quick cool dump open ?

Altho 50 amp is not nessecary for a 15k you may not be able to run as many items with 15k running.
Sell the 13.5k on Craig's list or ebay.

Ive got a single 13.5k on a 36' fifth wheel and live in the humid Midwest and it works good.

"sabre owners united!"


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Old 07-22-2014, 11:10 AM   #4
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I would suggest some reading on here about ac ductwork. You can probably get a lot more cold air out of your current ac be sealing up leaks in the ducts near the vent openings. Also at the main ac unit as well. My old 28bh TT could freeze us out in 95 deg temps if wanted.
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Old 07-22-2014, 12:28 PM   #5
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I guess my take on the whole "new" vs "used" issue is this camper sat on the lot connected to shore power so that customers could look at it and play with every knob, switch and button in the unit and then it was considered "new". I take it home for four days and find out the A/C doesn't seem to cool it down very well and it's "used".

Not sure what you mean by leaving the "quick cool dump open" but I'm assuming you're referring to the vents on the A/C unit itself. I had those wide open, all ceiling vents and even closed the bunk curtains and skylight blind with no change. The A/C thermostat was on High Cool and Auto.

I'll check for leaks around the ducts etc; never thought of that since it "was" a "new" unit.
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Old 07-22-2014, 01:15 PM   #6
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Did you do the Reflectix and solar blanket mods on your Niagara? If so why not do the same on your Shamrock? If not then I suggest you consider both mods as they do make a difference. We had a popup and then an HTT with 3 popout bed ends. Both campers had 13.5K AC units. I did both mods to both campers and found the AC unit kept the campers quite comfortable.
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Old 07-22-2014, 09:29 PM   #7
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Quote:
Originally Posted by Avenger61 View Post
I guess my take on the whole "new" vs "used" issue is this camper sat on the lot connected to shore power so that customers could look at it and play with every knob, switch and button in the unit and then it was considered "new". I take it home for four days and find out the A/C doesn't seem to cool it down very well and it's "used".

Not sure what you mean by leaving the "quick cool dump open" but I'm assuming you're referring to the vents on the A/C unit itself. I had those wide open, all ceiling vents and even closed the bunk curtains and skylight blind with no change. The A/C thermostat was on High Cool and Auto.

I'll check for leaks around the ducts etc; never thought of that since it "was" a "new" unit.
Just for the record in about 95-98 degree direct sunlight the a/c on my 2014 23ss worked very well. I did have the pop up gizmos on and bunk end curtains closed. I good working A/C for us was super important so I monitored it closely.

Just curious... Have you measured the air temperature coming out of the a/c duct using one of those infrared thermometers? Maybe someone can test their a/c to give you a good benchmark comparison (mine is in the shop for a repair). Maybe your air is not cool enough coming out.

Just a side note when I was troubleshooting my truck's a/c I was able to demonstrate to the tech that it was not working properly. The air coming off the vents was 10-15 degrees warmer than what it should have been when compared to a similar vehicle.
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Old 07-22-2014, 09:31 PM   #8
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Oh. Check this video out by rvTravel about the infrared thermometer.

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Old 07-22-2014, 09:39 PM   #9
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Going from 13500 to 15000 btu unit I highly doubt you would even notice a difference. You should see close to a twenty degree split across your coil. Measure your return air temp or temp inside your rig vs what's coming out if the supply vents. If you get 20 that's about as good as your gonna get. The hotter it is outside that split may drop to 15. If it's cooler out then you may see 25. Goodluck


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Old 07-22-2014, 11:36 PM   #10
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I guess my take on the whole "new" vs "used" issue is this camper sat on the lot connected to shore power so that customers could look at it and play with every knob, switch and button in the unit and then it was considered "new". I take it home for four days and find out the A/C doesn't seem to cool it down very well and it's "used".
It's no different than for a car. In fact, they can sell you a car that's sat in the showroom with folks playing with it, and even with some miles on it (as in - someone interested insisted on driving it first) as new, but as soon as the tires hit the street after you've signed the papers, it's now "used."

Right, wrong, or indifferent, that's the way it is.
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