Carrier Air v roof mount a/c, the condensor that's enclosed in the plastic inner shroud pulls so much moisture out of the air the fan blows it against the inner plastic cover and leaks into the camper. Had a tech come out and check amps and drain holes and said there's no way to stop it.
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Water in an air conditioner is generally condensation building up on the indoor coil. This happens when the temperature of the coil is below the current dew point of the atmosphere. You have possibly two issues going on.
1) the condensation drip line, which carries the water to the outside is blocked or disconnected (most likely blocked with wet dust build up etc) and can typically be cleared by using an air hose to blow the blockage clear.
2) excessive water can be an indicator that you may have a slow leak in the refrigerant system. reduced pressures will lower the temperature of the coil causing it to condense more water, more frequently. While you might enjoy the seeming better performance of the unit, if there is a leak it will eventually reach a point where the water will freeze(cutting off the air flow so no cooling) and eventually stop working altogether. Have a certified technician check your system for leaks. Remember that most rooftop units use R-22 refrigerant, not R-134a automotive refrigerant. The wrong refrigerant in the system can be very damaging to components and seals, and can cause the unit to function improperly.
Try googeling Camping world ,Adventurerv ,or best rv and truck supplies ,these are all in the USA who deliver to Australia.I usually find that it is much cheaper to buy parts like this from the US even with the delivery charge.
Hi; Is the drain for the condensate draining. You will have to check the top unit to see if water is present. You can also check the air filter to see if it needs to be cleaned. Please only use a household cleaner and hot water on the filter screen. Also what is the inside temp. when You notice the sweating. If Your in a very humid climit some times the unit will sweat until it can remove excessive moisture from the inside space. Also does the tstat seem to be working normally and holding temp. ...alpharome416
You need to find where the drain is. The water should flow to a drain and not into the unit. Once you get the condensation draining properly you can use a good quality silicone to seat around the unit. You might check at a RV parts place and find a product they recommend for RV roofs. Hope this helps.
there should be a pan under the evaporator coil in the roof mounted unit, the pan should have a hose on it to remove the water to a non objectionable place, you need to locate the drain and pressure it up to clear it, I would also remove the top covaer and check the cleanliness of the coil drain pan itself
These units do not have condensation "hoses", they have an evaporator pan than is located under the evaporator coil and catches the condensation and then lets it drip down onto the roof and then off the RV. If your AC is leaking into the inside, remove the inner shroud and feel up into the evaporator area for the pan. If it is full, then the drain holes are plugged. They are not easy to get to. Remove the upper shroud and then remove the front cover over the evaporator. At the base of this area is the pan, on each end is the drain hole. Clean them out and all should be fine.
Sounds like you have either an bad Start Capacitor/PCTR or have burned out the controls of the front unit. Get on the roof and remove the upper shroud of the front unit. Access the capacitors by removing the cover on the side of the AC. The capacitor that you are looking at has a black "relay" attached to it. Visibly inspect this for electrical damage or charring. If so, replace it. If this looks fine, then put everything back and head inside. Remove the inner shroud from the AC and pull down the control box. Remove the cover from the control box and inspect the 120V connections for ok. If they are burned, you can often cut them back to clean wire and reattach. If these look fine, remove the entire cover and inspect the 120V wires at the relays. If they are burned, replace the control unit.