It probably doesn't have an overflow drain. There will be an internal pan on or near the compressor where condensation collects and in normal operation the compressor produces enough heat to evaporate the condensation. This doesn't always work, however, if you have been running the unit in extreme humidity and turn it off. It can overflow when shut down, particularly if the unit is no longer level. I am pretty sure I have seen this problem talked about in earlier posts.
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22 Freedom Express 257BHS
19 F-150 3.5 Max-Tow
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