Question about Coleman Mach 15 Air Conditioner

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Hi we have bought a second hand caravan with a Coleman TSR air conditioner. The fan works and it sounds like the unit is trying to kick in it sppeds up for a while and then slows down. It dosn't get cold, we have cleaned the filter. We don't know how old it is or if they need re gassing can any one help with some ideas. Regards pauline

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  • pauline280 Jan 04, 2011

    Thanks I will try all of those suggestions, its pretty old but when we bought the van we tried it and it worked but its been sitting for about 6 months with no use.

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The first thing I would do is to give the unit a thourgh cleaning around motor and fan. Blow out with compressed air if possible and brush and vacumn out what you can get to.Check for oil ports on motor and add a few drops of fine grade of machine oil. If it's very new it is probably sealed bearing and no lubrication is possible.
If it is very low on freon the compressor may try to start then shut down due to low pressure. If it has service ports on it and you have ref. gauges you can see what the pressure is without the compressor on then switch it on and see what happens.If there is no change in pressure then compressor is not working and I would slowly add freon to see if it will start. I hope this helps you some. Thank you

Posted on Jan 04, 2011

  • Jack Spooner Jan 04, 2011

    Thats good to know that it was working. Don't know what your location is but if it gets very cold where you are and it been setting that long then I would feel much more confident that adding some freon will help you. These units have rubber o-ring seals and are known for leaking if not used regularly to keep them lubricated. Best of luck and have a good new year. Thank you

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