470 Forward State Room A/C Issues

meberlein

New Member
Feb 26, 2011
10
Lake Michigan, Muskegon
Boat Info
470 Sundancer 2010
Engines
Cummins T-QSB480
In need of help
Have 2010 470
Forward State Room Heat / AC unit seems to be working fine but is way to humid..
Had local guy out everything seems to be working as it should but no fix
his plan was to keep fan on low speed. Anyone else have this issue and how did they fix it?
 
Did he put gauges on the high and low pressure sides of the compressor? If it is "low on freon", it will "run" but won't get cold. Also, check to see if the evaporator is freezing up. Again, indicative of a low freon situation leading to humid air. Good luck.

Jaybeaux
 
Make sure the return for the ac in the area is not obstructed. U might have a filter grill that's clogged so its pulling air from a different part of the boat. That's my guess. NOT ON THE UNIT . 2nd filter or return in the area in question .

Rob
 
Thanks Rob I'll check this weekend on first part.
What do you mean by 2nd Filter or return in the area in question. Are you saying add another filter?
 
Did he put gauges on the high and low pressure sides of the compressor? If it is "low on freon", it will "run" but won't get cold. Also, check to see if the evaporator is freezing up. Again, indicative of a low freon situation leading to humid air. Good luck.

Jaybeaux


The local "expert" did put gauges on low and high side and said the unit is running perfect.
The unit is not freezing up. Works good. He did test the humidity level coming right out of vent and it test about 72% humidity he says that seems high but doesn't know where to go.
The boat is a 2010 he gave he 3 things to it could be.
1. drain pan plugged.. Check and no free standing water in pan.
2. Drawing air from biliage area that has free standing water or very humid. OK storage area in forward stateroom no water at all in fact we use it a dry storage.
3. Unit is over size... Humm find it hard searay would do this or I think a lot of other people would be complaining.

I guess I have to find another "expert" in Muskegon/Grand Haven , Michigan
 
Check the temperature differential from the return air and the supply (discharge) air. Should be around 16-18 degrees difference. Sounds like low freon or a failing compressor.
 

Forum statistics

Threads
112,950
Messages
1,422,865
Members
60,932
Latest member
juliediane
Back
Top