Question about Dometic Rooftop RV Air Conditioner
Have had problems with duo therm air conditioner leaking inside camper. water dripping/pouring into floor from vent. Just replaced board and gasket...still leaking
I have the same problem....it is a negative pressure problem holding water inside the unit until it overflows the pan and runs into the duct system. why this occurs....I don't know....I cant find a problem with my air return, but as soon as you turn in off, the water comes gushing out the drains on the unit. I resolved this....temporarily....by twisting up a paper towel into a wick, and placing one end up into the drain tray, with the other end lying well out into the exterior case. This lets the water wick out and keeps the tray drained. I don't understand the problem and don't know what the permanent fix will be, except maybe cutting a hole and placing an intake vent directly below the unit.
Posted on May 11, 2009
In each of these cases I would check for proper connection of the return air vent to the A/C from below. Static pressure from insufficient return air could cause negative pressure to hold back on condensate drainage. when the unit is shut off the pressure becomes equal allowing water to drain. Also check air filter and clean if found necessary.
Posted on Jul 18, 2008
It probably a dirty coil. when the air passages are restricted it increases negative pressure. residential units require a trap on drain line to overcome drain issues.
Posted on Jun 20, 2015
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