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Whirlpool thru-wall A/C, 10000-12000 BTU range. 220v unit running in a small condo unit. Set up to cool living room and kitchen, not sure of sq footage but these rooms are small. The unit initially cools but compressor cuts out within 15 minutes and usually doesnt come back. Makes a smell described as "musty". I measured 206v at the outlet, changes less than 1/2 volt with load (compressor on/off). I assume this means that the condo building is supplied with 3-phase power. Unit draws ~3.25A with compressor on. It didnt cut out while I was there, maybe a hot day makes a difference. This unit has been replaced twice, so cant be manufacturing defect. There are no obstructions on the exhaust as far as I can tell. It is on the sunny south-facing side of the condo but I cant imagine that makes a difference. My hunch is that these units cant tolerate 208v power supplied by 3-phase service, and the compressor is overheating. So easiest solution is to install a 110v unit, rewiring the outlet? Any ideas appreciated. TIA, Charley