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Old 06-26-2015, 12:24 AM   #1
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Default A/C issues after work

Hello all!

I have a 2004 Maxum 2400 scr. Yesterday I changed the impeller and gas filter. Also, I ran through a couple cycles of water as I was getting a red tint from the antifreeze at both the sink in the cabin and the one in the head. When I initially got out there, at about 2pm, I turned on the A/C and the cabin cooled to 65 degrees within an hour. Later on, after running the boat for a little while, I turned the A/C back on and was unable to get the temp in the cabin below 75. I noticed that not much air was coming out of the vents. I refilled the water tank and nothing changed. Any idea what I may have done/am doing wrong?

Thank you!!
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Old 06-26-2015, 01:04 AM   #2
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Could be a little low on Freon and froze up.



Run it again, and see if there is ice growing on the unit.



Your boat is in the water right? These ac units raw water to cool the condenser. Your water tank has nothing to do with the AC.
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Old 06-26-2015, 01:05 AM   #3
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Thank you for the help. Any advice or past thread you know of that speaks about how to charge the freon?
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Old 06-26-2015, 01:07 AM   #4
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It is R22, you will need a licensed ac tech.
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Old 06-26-2015, 01:08 AM   #5
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Good to know. Thank you again!
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Old 06-26-2015, 01:09 AM   #6
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See my edits above. Your boat is in the water, right?
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Old 06-26-2015, 01:10 AM   #7
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Oh, Yes, it's in the water. Where should I be looking for the ice buildup?
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Old 06-26-2015, 01:12 AM   #8
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On the unit itself. Not sure where yours is, mine is under the forward berth. It will be all over the evaporator, usually starts from the bottom and works up. Might take an hour or two to build up.
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Old 06-26-2015, 01:14 AM   #9
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Ok. I will run it tomorrow and see if I can locate the unit. I'll check the manual and see if I can find it.
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Old 06-26-2015, 01:20 AM   #10
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Even before ice builds up, there should be water droplets on the little tubes after its been running for a bit. That's normal.



If they look dry, touch them... Carefully. One will be cold, one will be very hot. If your finger sorta sticks a bit to the cold one, like when grab an ice cube out of freezer, it's probably running below freezing, meaning its low on Freon.
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