Are my A/C's working correctly?
I have a 2018 Fleetwood Pace Arrow 38N with 2 13,500 BTU A/C's. The RV is a little over 39 ft. I am new to RV'ing and don't really know what to expect concerning the cooling capacity of these units. I...
Forum Discussion
The first thing you have a problem with is your reliance on the SET Temp of each AC. Setting a RV tstat at 75 in hot possibly humid weather and expecting the unit to get to 75 degrees is not feasible. There is a big difference between an RV and a HOME in insulation factors. What you should do is simple. Set BOTH Zones at 65 degrees and do your test again. You also need to start the test at night to allow the RV to get to temp without the trying to overcome the daylight sun and heat. Starting out at a good cool 65 to 70, then see how it keeps up. There a 2 tests for correct AC operation on a RV
1. NOT completely accurate but close is a 17 to 22 temp difference between the intake filter and the nearest Cold air exhaust to the AC unit
2. A Compressor amp draw test corrected for outside ambient. This is how a qualified RV Tech should do it.
3. Since you have ducted ceiling units a common failure by the maker is to NOT install the hot intake and cold exhaust separator in the roof mount plenum. This allows cold air to be drawn and lost back into the intake and will drastically lower cooling capacity. Doug
1. NOT completely accurate but close is a 17 to 22 temp difference between the intake filter and the nearest Cold air exhaust to the AC unit
2. A Compressor amp draw test corrected for outside ambient. This is how a qualified RV Tech should do it.
3. Since you have ducted ceiling units a common failure by the maker is to NOT install the hot intake and cold exhaust separator in the roof mount plenum. This allows cold air to be drawn and lost back into the intake and will drastically lower cooling capacity. Doug
