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duckman2018's avatar
duckman2018
Explorer
Aug 03, 2019

Coleman Mach a/c unit not working right!!! Help please???

I have a 2017 jayco travel trailer with (2) Coleman mach a/c units. The rear one for the bedroom is not working right. I noticed it was not cooling right so I checked a the compressor, fan motor etc...
wa8yxm's avatar
wa8yxm
Explorer III
Aug 04, 2019
Two questions.. ONE: have you cleaned the condenser coils outside?

Two. Remote or ceiling mount controls?
With remote there may be a frost sensor in the evaporator coils (Usually lower right corner... Just sticks in) if it's low on Refrigerant (Folks it is no longer Freon (R-12) but something new (134A) then it will "ice up" and the frost sensor will shut it down.

If you are on a 30 amp site and have a load shedder type energery management system (intelletec) it can cycle the compressor too.

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