Question about Coleman Mach 15 Air Conditioner
I believe I'm having the same problem. I just bought a used travel trailer equipped with the Coleman TSR Mach 3. We started using the a/c this past Saturday morning and was working fine until about 2:00 pm when the sun was directly over the camper. Then the compressor kept shutting off and when it tried to kick back on it just couldn't. So we turned it off and when the sunset and everything cooled off we started it back up and it ran all night long because we stayed in it just to make sure. We left it running all day Sunday until 2:00 pm came again and the compressor shut off again. Again when it cooled it ran fine. Now two days later it will run for about an hour and it will cut off and when it tries to come back it just cant't make it. Nothing is tripping inside the camper or the house, water is also dripping from atop the camper so I don't guess it is freezing up. Could this be something major? Please help I hate to buy a new one
I would check the thermostat based on what you said it could be out of calibration
Posted on Jun 11, 2008
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Posted on Jan 02, 2017
I don't think you need a new one just a good cleaning and service. The unit has a liquid high temperature line near the compressor with a fan blowing outside air across it this coil gets clogged over time with air-borne dirt and pollen and leaves and such and must be cleaned regularly or the unit will be unable to remove the heat from the coil and during the peak demand (3pm) the circuits that protect the compressor and the trailer wiring from being overloaded and burning or melting will trip. From what you have described it sounds like the RV is working as it should with a condenser coil that needs to be cleaned. GL and happy camping!
P.S. I've only serviced the occasional RV unit but in those cases I laid a piece of plywood on top of the Rv for work platform removed the retaining screws from the top cover and used a spray bottle with a good heavy foaming cleaner a shop-vac and a brush to get the job done.
Posted on Jun 11, 2008
Dirty coils might be your problem. You might have a refrigerant problem as well. Try cleaning it first then have a tech put gages on it. Doesn't sound too serious
Posted on Jun 12, 2008
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