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Old 09-28-2018, 08:24 AM   #1
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I obviously made a mistake

Due to a death in the family, I left my boat unattended for 2 1/2 weeks. A week before I changed the water pump for my forward air conditioner. I left it in dehumidifer mode. The aft air conditioner was left running normally. I came back to find an E-4 error on my forward air. My aft air is fine and still running.

On further investigation I found the forward lines filled with barnacles and a substantial clog somewhere that I have to track down.

My question: Should I have just let it run normally and not put it in dehumidifier mode? What a pain in the ...!
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Old 09-28-2018, 08:34 AM   #2
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Sorry about your loss.....

Probably wouldn't have mattered either a/c or dehumidifier but check the manual at what water temps the dehumidifier works OK.
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Old 09-28-2018, 08:35 AM   #3
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Well, it was going to clog anyway whether it was in humidify or temperature control mode.


So, clean out the clog, and I say this with no direct experience but the theory supports its use, put some bromine tablets in the raw water strainer to control the critters.


David
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Old 09-28-2018, 08:42 AM   #4
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Thank you! This makes me feel better!
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Old 09-28-2018, 09:07 AM   #5
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Greetings,
Ms. D. Sorry for your loss. Coulda', woulda', shoulda'...It's a done deal. No sense beating yourself up about it. With your VAST skills, trouble shooting and rectification will be a stroll in the park...


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Old 09-28-2018, 09:16 AM   #6
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ďSo, clean out the clog, and I say this with no direct experience but the theory supports its use, put some bromine tablets in the raw water strainer to control the critters.Ē

Sorry for your loss
Barnacle Buster will work well for cleaning. I would service all salt water systems at the same time.
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Old 09-28-2018, 09:22 AM   #7
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Well, it was going to clog anyway whether it was in humidify or temperature control mode.


So, clean out the clog, and I say this with no direct experience but the theory supports its use, put some bromine tablets in the raw water strainer to control the critters.


David
I have read several reports stating that use of chlorine in raw water reduces corrosion in copper/nickel.

I have to add 6 1" tabs of chlorine every day or the green scum of clear lake will plug the strainer.
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Old 09-28-2018, 10:15 AM   #8
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Chlorine will make any plastic parts in the system brittle and prone to failure. Bromine will not....
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Old 09-28-2018, 10:40 AM   #9
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I am open minded that I am making a mistake. But I never leave my ACs on dehumidifier or not when I leave the boat to go back home. I will tell you that I have to periodically clean mold off of wall paper in certain areas. For some reason the bow of the boat is worse so I leave a fan running there. I just donít like the idea of the leaving the ACs running when not on board for long periods.
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Old 09-28-2018, 11:02 AM   #10
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Greetings,
Slight thread drift in response to post #9. We leave 9 oscillating fans running in our absence. 1 in v-berth, 2 in guest cabin, 1 in PH, 2 in saloon, 1 in ER and 2 in the master cabin...No problems with mold thus far in FL.
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Old 09-28-2018, 11:16 AM   #11
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I leave my AC's off and use a $200 dehumidifier in the cabin/pilothouse. The cabin gets hot, no doubt, but no harm seems to come from it. Dehum cycles off when temp goes up, as higher temp means lower RH. It cycles back on in the evening. Very happy with the arrangement. Marine AC's can be problematic if they run all the time.
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Old 09-28-2018, 11:24 AM   #12
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bromine tabs kept the barnacled and grass from growing in mine. I have used fans and dehumidifiers for extended periods as well, in order to not over use the ACs, all with some good result.
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Old 09-28-2018, 01:46 PM   #13
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I should have just let it run. Have never had this problem before. I can tell you it’s about 100 degrees and working in this heat is no fun. Sigh....back to work.
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Old 09-28-2018, 02:14 PM   #14
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AC

I never run my ac when Iím not on the boat. Too many things can go wrong. I bought a dehumidifier from Walmart and it has a hose attachment that drains overboard from the galley sink. I open hatches etc and set it to 60%. It will drain the water thatís in the bilges. I also use fans.
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Old 09-28-2018, 02:18 PM   #15
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I never run my ac when Iím not on the boat. Too many things can go wrong. I bought a dehumidifier from Walmart and it has a hose attachment that drains overboard from the galley sink. I open hatches etc and set it to 60%. It will drain the water thatís in the bilges. I also use fans.
Yea I do all that too but I usually let my acís run. I let aft run and no problem.
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Old 09-28-2018, 02:38 PM   #16
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I never run my ac when I’m not on the boat. Too many things can go wrong. I bought a dehumidifier from Walmart and it has a hose attachment that drains overboard from the galley sink. I open hatches etc and set it to 60%. It will drain the water that’s in the bilges. I also use fans.
I asked my AC guy about leaving it normal or dehumidifier when leaving the boat. He said, the electrical saving is not that much. So I just close up the boat, raise the AC temp about 10F an not worry.
He did recommend bromide tabs.
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Old 09-28-2018, 08:01 PM   #17
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Done! Working fine, bromide in. I’m going to bed!
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Old 09-28-2018, 08:48 PM   #18
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Done! Working fine, bromide in. Iím going to bed!
Congrats, we had something similar happen on our way back from NY a month ago and spent 5 days and nights with no AC. All fixed now as well. You'll sleep better now!
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Old 09-28-2018, 08:51 PM   #19
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Chlorine will make any plastic parts in the system brittle and prone to failure. Bromine will not....
I think you'll find that bromine is highly reactive with plastic. It even eats teflon. Storing it is a real challenge.
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Old 09-29-2018, 06:21 AM   #20
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Not to be a thorn, and I have no idea....

But..... may I submit that most of the water system in a hot tub is PVC or plastic (like)...at least the ones I had or am familiar with.

My strainers sre Marelon....guess its time to research yet another new to me boating topic concerning bromine in the system.
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