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Old 06-02-2018, 12:40 AM   #1
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AC troubleshooting

we have a 2017 View and the AC didn't cool efficiently. Any tips? Or another trip to service! New to Rving.... thank you
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Old 06-02-2018, 12:33 PM   #2
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You need to explain what your mean by "didn't cool efficiently". You have a Coleman Mach 15,500 btu A/C unit which is the largest made for the RV industry. How cold it gets in your motorhome is dependent on things like outside temperature, humidity, whether or not you are parked in full sun, and so on.

RV A/C units can cool about 20 degrees below the incoming air. If it is 90 degrees in your coach when you start and if it air coming out of A/C unit is 70 degrees, your unit is in spec.

From a practical standpoint, solar gain is your biggest challenge. Keep the blinds closed, use your front window shade if you have them, use a piece of Reflectix over the shower sky light, use a piece in the Midi-Heki skylight (if you have one), use insulating pillows in exhaust fan housing, use your awning to shade the side of the RV if you have direct sun on the side, and so on.

If you are in a humid environment, keep the fan speed on high, don't set the temperature too low (you will freeze up the coils) and remember that things need to dry out before cooling really starts.

And keep your filters clean. So, unless you have no cooling, save yourself the trip to service since they are going to find nothing wrong.
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Old 06-06-2018, 09:58 AM   #3
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Thank you for your reply. In short.... the AC didn't cool and at that temp gauge went up a degree then finally dropped only 2 degrees. We will start with changing the air filter. Thank you so much.
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Old 06-06-2018, 10:13 AM   #4
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Depending on the size of your View (I suggest you put that info in your Signature in your Profile) one 15k BTU should cool your Class C in all but 90+ temps pretty effectively - though not always quickly.


If it's not then you may have a problem with your AC. Yes, check and clean the filter. If you have an instant read thermometer for the kitchen try using it in the air flow coming out of the AC to read how cold the air is coming out of the unit. As Roger said, it should be at least 20 degrees cooler than the ambient air in the RV.
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Old 06-06-2018, 02:47 PM   #5
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As LoveLabs said.....

Personally, I doubt that the filter is dirty in a 2017. But, it is not unheard of to have some plastic, paper, or junk FODDING the intake to the circulation fan. Worth checking.


Open all the vents..... wide!

One other thing to learn is that these units can easily ice up in high temp & high humidity situations. The tendency is to keep turning the thermostat colder. The compressor then runs longer or continuously. Eventually, especially with low fan speeds, the expansion coil will turn to a block of ice. The RV gets warmer and humid inside. So.... folks keep turning the temp down lower. You can see where this is going....

The fix is: set the thermostat at a 'reasonable' temperature. Say, 72-77 & fan on HI.
This will allow the unit to cycle periodically and clear any frost/ice that has formed on the coil. (If it IS iced …. you will feel it get warmer and more humid as it melts out. Also you should hear the compressor cycle on and off.) No worries, it will eventually start dropping the temperature and humidity in the camper.

A good way to tell if the unit is working properly (if it is not iced up) is to look for condensate running off the roof. Usually on the entry steps no matter how you park it!!!!! On a hot humid day, it should be producing a steady trickle of water off the roof.

A last point.... the Coleman Mach 8's condensate drains are damn near impossible to get crapped up. They are located on both sides of the unit about 1/3 of the way from the front. The drain pan runs crossways under the expansion coil so it can drain from either side from some pretty large 'ports'. They are also about 1 to 1 1/2" above the deck so they should never get clogged up. UNLESS!!!! WBGO has gone a little overboard and installed the internal drain system. Basically, they install a tube that drops down inside a wall to drain the condensate out under the RV. Now those nasty things get clogged up. I don't think you have that set up. It simply drains out on the roof..... and right on the entry step... always!
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Old 06-13-2018, 05:33 PM   #6
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Quote:
Originally Posted by cuttercody View Post
we have a 2017 View and the AC didn't cool efficiently. Any tips? Or another trip to service! New to Rving.... thank you

Being new to RVing you are in a learning curve. You came to a great place to get help.


One of the things I learned early on ('05 is when I started) was it is important to start cooling early. If you are away for the day and the outside temp 90* and the coach is 110*, chances are you won't catch up soon. Set the temp at what you like and let it take care of its self. You may already be doing that. If so, the above posts about blockage by some foreign object is step 2. If that is not the problem you will need to get a RV A/C tech involved.



I just had work done at the new factory service center in Junction City, OR. They seem capable enough. My problems were jack and ceiling fan related.


One other thought for you. For a multitude of reasons I leave the vents cracked a bit. This helps to let some of the hot air out and releases humidity, a real problem for all RVers any time of the year.


Look forward to hearing of the fix for your problem.


Rick
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