It's been record hot up here and my AC unit (16,000 BTU) just is not keeping up. 90+ outside (water is 80) and the boat is not cooling down. It cools to high 70's. It works, but just not cooling down the cabin. I would like the get this working the best it can.

I'm not sure if the water that the boat is sitting in is to warm for AC to cool efficiently. I took it for a ride into the lake and the boat seamed to cool a little better when I took it into the lake where the water was cooler. I keep the intake filters in the cabins clean and vacuum them off regularly. I've also replaced some of the duck work with insulated rigid duct work for better flow and R value. I have nice solid stream of water coming out AC through hull fitting.

I'm in fresh water. I keep the sea strainer clean. Last year, I connect the city water (garden hose) to the intake and flushed it out. Some brown water blow out, but not much. Occasionally I will drop a pool bromine tablet into the sea strainer and let it dissolve and flow through the units. I think this will keep any stuff from growing in the lines.

Today, Under the dashboard where the unit lives, I took the AC intake vent off and flushed the coils on the condenser. They where not to dirty, but some grime did come off. They do look cleaner.

My questions is, Since I'm in fresh water, do I need to do a descale flush on the water side of the system? Run some sort of acid through the water side to clean it out?

What else can I do to increase the performance?

Thanks for the info.

Hello everyone and thanks in advance for your help.. I am a proud new owner of a 1984 36 Mariner.
.My problem is I don't seem to be getting water to my vacuflush toilet and air conditioning heating unit. I would like to know if there is a separate Seacock for this and where it is located.

UPDATE: problem found! Leak was behind the swim platform shower in the water shore hookup. A fitting cracked. Ughhh. At least it was an easy fix but wow it took forever to find! I even looked at the swim platform shower, WHY didn’t I look at the shore water connection! 4 screws!! Hey Carver friends! You guys helped me create my own air filters for the holding tanks, I am sure you can figure this out! After a winter away from the boat we were able to make it the first of June to stay a month or so. First thing I did was turn on the water (we always flip the fuse off when we leave) and I noticed the pump kept kicking on. I checked the bathrooms, kitchen, and was on my way to check the swim platform shower when I noticed water pouring out under the ice machine/sink. I took off the front, found the leak, fixed it and put the thing back together again. 4 minutes later the pump kicks on. It only runs for 3-5 seconds but it comes on every 4 minutes. I started looking for a leak and found water under the holding tank for the back toilet. I could tell by the color and lack of smell that it was not toilet water. I sucked it out (about 10 gallons) and turned off the pump. water fills back in! I drained the tank, cleared all the lines and slept overnight, no water. I have checked every line I can see, the water pump, took apart the ice maker again, pulled the shower out of the swim platform, pulled out the water hose connection by the ice machine, checked the engine compartment, nothing. I have looked under the sinks, took apart my closet under the ice machine thinking I could see water lines running up to the ice machine and water hose thing, NOTHING Bone dry. I have been looking at the schematics hoping to see what compartments I can look in to find lines or shut offs to eliminate possibilities. I don't think Carver put any shut offs on anything. I filled the tank back up about half way and put grape liquid kool-Aid in it and waited. The leak reappeared and was purple. I decided it HAD to be the tank but I have used a camera and checked all the connections. They are all good. I drained the tank and the water under the holding tank and connected to the dock water. I figured it would stay dry which would mean it had to be the holding tank or the lines from the tank to the pump but the hull filled back up again!. AHHHH the water back in the hull means the leak is in the pressured side of the system? Wow is it tough to follow the water lines around the boat. Any suggestions would be great. I have not checked the hot water tank or anything forward of the engines since the water is only in the back and since the boat is dusty dry except under that tank. Thanks guys! I LOVE this group!

Hey all- we are trying to figure out which Maxwell Freedom Windlass we have on our 1997 350 Carver Mariner. Is it the RC500 or RC800? We need chain and are trying to determine the size. Any insight?

My boat has a large hatch that opens with two hydraulic rams, and a smaller hatch in the large hatch for quick access, and in case I need access with dead batteries. I had water in the motors when I bought it, and knew about it and drained it all out. Water got in the port motor a 2nd time after I bought it, and I think it came through the engine compartment. I was worried that it was a head gasket or worse, but I did notice after cleaning that I had sudsy water all over my motors, and I didn't use a hard spray. I'm guessing its leaking through the small access hatch hole. I did check and the channel is free and clear, and the drains are open. It used to have a foam gasket mounted on the top piece of the hatch, and it's pretty well shot. I'm guessing it needs replacing. Is this what I need, and if so, what width and thickness is best? My old one is too shot to get dimensions from. Also, when installing, how best to handle the corners? I’m guessing butt joints, should I use some sealer at the joints too, or just keep it tight? It’s on of those deals where I’m guessing overlap will cause a bad seal.

Hello, I recently purchased a 1984 Riviera 2807 and wonder if anyone has a link to a parts manual, I have the original owners manual but it isn't very detailed .

Thanks Dave

Greetings all: I'm in the final stages of moving up from our 1997 355 to a 2004 360 Sport Sedan. I'm new to diesel engines. The boat we are looking at has Volvo KAMD 300s with 22x22 4 blade props. Wondering if anyone know what I should expect regarding WOT when we sea trial her. Thanks!

1997 355 u line ice maker in aft deck. Any tips on how to remove this ice maker from the large enclosure on the aft deck?

Mine also had the small sink. Ice maker all off a sudden will not turn on. No fan or compressor. nothing.

Going to make sure it is getting power first. Is there an outlet inside the wet bar enclosure the ice maker is in? I have checked all breakers and GFI outlets. Any ideas how the power is wired to this area?

The outlet right next to the wet bar area does work, although you sometimes have to juggle the cord. Thanks for any input.

Well, the mechanic I hired installed a new feature, submersible.
I'm just plain pissed....
The only thing that stopped it from sinking...was the bottom.

Hi all,

New issue. on July 4th problem occurred with power to AC (first time this happened). Both power panels were live and working. All of a sudden Air Condition power panel died. went out to dock side and noticed the fuse box was flipped. Turned it back on went back in no AC. Played around with power line, switch around the 2 lines, etc. and AC came back on but other AC power panel did not come back on. I checked the back and the boat side fuse was not tripped. After more trouble shooting, I hooked up to next empty power box on the doc and it was all fine. So I had the Air Condition line on my power box, and the other AC panel on the 2nd power box, and that worked fine. Today I had the kids on the boat and they said it kept tripping of the other box on the dock. I already called on electrician, who will show up Monday. I was not at the boat myself today, so not sure kids tried the correct way or not, hard to tell. I will re-check Saturday when I get to it. But they said the AC power panel was warm to touch while it was working. I had never noticed it before. I will check what behind it over the weekend, but before than I was curious if anyone had similar incident and have any comments about this? Also weather has been extremely hot, but I eliminated the cable as it seems to work until it gets tripped at power source. Are there anything behind the power panel inside that I may need to check or replace? When it works it does give cold air (both units). The back cabin one gets very cold as it is smaller area. The main cabin one takes a long time to cool when it is extremely hot though. But it does cool when it works.