Reduced air flow from AC

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1 week 4 days ago - 1 week 4 days ago #6268 by Captain Krusty
Reduced air flow from AC was created by Captain Krusty
After running the AC on my IP 29 for several days the volume of air flow from the vents has dropped considerably and the boat is not cooling. The seawater water circulation has not changed and is good.There is frost on the coils of the unit. Don't know if this is a problem. Any ideas on what is causing these issues?
Last edit: 1 week 4 days ago by Captain Krusty.

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1 week 3 days ago #6269 by gpb102030
Replied by gpb102030 on topic Reduced air flow from AC
Turn compressor off and turn fan to on to defrost coils. Then clean coils. Once clear and airflow back to normal turn compression back on to cool. If it continues to frost and freeze up it is likely low on Freon. You will need to recharge and check unit and coils for Freon leaks.

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6 days 23 hours ago #6270 by bpfanstiel
Replied by bpfanstiel on topic Reduced air flow from AC
If you have not done it already, either clean or replace your return air filter. With reduced air flow the coils are more prone to freeze up. We regularly vacuum the coils. Besides owning an IP27 with a/c l maintained air handling equipment for 36 years.

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1 day 3 hours ago #6275 by Captain Krusty
Replied by Captain Krusty on topic Reduced air flow from AC
Thanks for the great advice. All is well with the AC. I cleaned the filters and it's cooling better than ever.

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