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We have a 1988 Terry Trailer with a Coleman MACH but that is all we know of it. It is on the inside cover. The air condition runs well for about 2-3 hours with full blowing power and cool air but then the air is warmer and the power of the blowing of the cold air is much less. If you turn it off for an hour or more, it will work again. What is bad with this condition
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If this is a park model trailer like mine, there is a transformer in what they call the ceiling package. It is mounted up inside the return air plenum.
Check the temperature of the air coming out the vent If it's more than 10 degrees below the air going in it's ok. If it's the same temperature, the condensing system may be not working. The compressor may just be a quiet one!
Either with a ladder and shop vac and long extensions and soft brush attachment from inside with flashlight for better view, or remove plastic cover on roof and then remove metal cover over evaporator by removing the short philips screws that hold it on.
COLEMAN R.V. AIR CONDITIONER SERVICE AND REPAIR QUESTIONS
COLEMAN R.V. PRODUCTS
GO TO rvcomfort.com
Click on RVP (RV PRODUCTS)
Click on type of AC, if you can’t find the information you want there,
then click on contact us on the Green Bar.
You can get Service Support or Email address and Phone numbers.
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
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.
the fan motor bearings need lub....the shaft has a tiny access hole to put some oil into. because the fan shaft is slowing down, it is putting more strain on the voltage current, and eventually the internal breaker shuts down the ac........plus your condenser is not getting enough air accross it, compressor heats up, and it too will shut the unit down......older units have to be oiled every year, and eventually it too will fail, and a new blower motor assembly is needed or replace the ac unit.....blower motor units are around $130....now you install it or pay to have it done at around another $150 labor,,,,,try yourself, if it fails then call the tech........let me know [email protected]
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