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Old 04-19-2010
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Thumbs up Onboard Marine air conditioner question

I will be looking at a boat on Friday, and if all is well with the survey, will buy it. The current owner mentioned to me that he hasn't used the KingAir airconditioner in a few years.

From what he tells me, the air conditioner will turn on and cool for about five minutes, and then shut off.

Anyone experience an issue like this on their onboard AC? If so, what was needed in order to repair it?

I am not deadset on getting a boat with an AC; however I am curious to know how big of a project it will be to get it working again.

Many thanks,
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I've seen that with low liquid/gas which does not trip on low level until the system is up and running. Another had a motor problem, with that one the first trip would take the longest, then it would cool enough to run again but for a shorter time.

Since the seller has not fixed it I suspect it is shot and needs replacement or major work. Make your offer with that in mind.
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thank you for your help. If the unit is low on liquid, does that mean that it just needs to be recharged, or does it mean the unit is shot and needs to be replaced?

Thanks,
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Originally Posted by manhattan08 View Post
thank you for your help. If the unit is low on liquid, does that mean that it just needs to be recharged, or does it mean the unit is shot and needs to be replaced?

Thanks,
If the coolant pressure is low, it may suffice to simply recharge but consider yourself lucky if that is the extent of it. A leak is caused by something deteriorating and just refilling it isn't a fix.
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Yep leaks means something is not good. Sure might just be a fitting that needs tightening but you still have to find it. Thing is I'm pretty sure he has already had someone look at it, maybe even fill it and has found out that it isn't that simple (rarely is) otherwise he would have fixed it for the sale, wouldn't you?
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Old 04-20-2010
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It may also be marine growth in the heat exchanger, which can be as simple as an acid wash or boil to fix.
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