Heat not blowing hot air

MajorAppeal

Trying to get my heat working. It worked on a sea trial we had recently and then it was winterized again and now it's not working. Took it for a boat ride and it's still not working. I'm not sure what hole is my output for priming the system, that's the only thing I can think of. It's not spitting out any water and it did for the survey. It's a rinker 270. Any ideas?

J3ff

System needs to be circulating water to work.   There's a valve under the rear bed that needs to be opened and closed each time you want to use it.... At least that's what I've done...  would be nice if it could just be left open

Liberty44140

Mine usually needs primed after I clean the raw water filter and the water falls out of the filter. To prime I just pull the output hose off of the water pump while it's running and then once water is coming out I reattach the hose quickly. Within seconds there is water coming out the side of the boat and all is well. 

reneechris14

Four though holes on the port side,should be lower left if I remember correctly.when you turn it on,stick your head under the bed and you can here the pump run.

J3ff

Mine is stbd, not port... 

reneechris14

Yup right not left,was the lower left correct. 

bella-vita

I never close my valve I prime it the same way liberty does.

MajorAppeal

There is water in the filter and the seacock is open. I tried removing the line coming our of the pump but it is not budging. Has several layers of sealant. Thats probably not thebway its been done on this vessel. Water is not coming out of any any of the sides. I see the four holes on starboard but they are too low for me to reach with a hose to reverse prime it. Any suggestions?

bella-vita

Mine is like unscrewing garden hose ,just hard to do so I have to use pliers.

randy56

When you when for the test ride did you get up on plane? mine re-primed itself that way.

bella-vita

Pump looks sort of like this,first time I tried pulling hose off after removing clamps couldn't get it off then I re realized it can just be unscrewed,do it once and it's good for the season.

MajorAppeal

Here's mine. This picture is upside down. There is something line 4200 or 4000 around the connection. When I try to unscrew it, it bounces back. Is there another way? Also did get on plane with seacock open.

bella-vita

Seacock would have to be open when getting on plane,I believe that the water should push through the output and push the air out through seacock I guess,but I never did it that way 

Dream_Inn

bella is correct.  or, you could also loosen just a bit those 3 screws holding the black plastic onto the pump and with the valve open it will make hiss until the air is out, and then water, just tighten back up.  I keep mine on a lift, so each time I lift it I have to close the seacock.  For those times I forgot, I just do what I said.

J3ff

So I'm being over zealous by closing and opening mine each time I go use or turn off the ac

J3ff

?

Dream_Inn

@j3ff if you leave your boat sitting in the water than you don't have to close it.  But, closing it makes it safer while you are away.  Also exercising the seacock is a good thing as well.

MajorAppeal

I tried attaching a hose to the end of a boat hook pole and put water in the ports on the starboard side. It didn't work. I called it a day as it was getting dark. I'll try the screw thing next time I'm down there. I had it up on plane three times since re-launching and that didn't work. I'll keep you all posted...

MajorAppeal

Dream_Inn said:

bella is correct.  or, you could also loosen just a bit those 3 screws holding the black plastic onto the pump and with the valve open it will make hiss until the air is out, and then water, just tighten back up.  I keep mine on a lift, so each time I lift it I have to close the seacock.  For those times I forgot, I just do what I said.

Do you do this with the A/C unit running or turned off?

Goods28

i take the pump out of the clamp and let it lay on the floor, Too easy to break the pump if you try taking the hose off. Works every time

J3ff

MajorAppeal said:

Dream_Inn said:

bella is correct.  or, you could also loosen just a bit those 3 screws holding the black plastic onto the pump and with the valve open it will make hiss until the air is out, and then water, just tighten back up.  I keep mine on a lift, so each time I lift it I have to close the seacock.  For those times I forgot, I just do what I said.

Do you do this with the A/C unit running or turned off?

Can't run the ac on D.C.

MajorAppeal

J3ff said:

MajorAppeal said:

Dream_Inn said:

bella is correct.  or, you could also loosen just a bit those 3 screws holding the black plastic onto the pump and with the valve open it will make hiss until the air is out, and then water, just tighten back up.  I keep mine on a lift, so each time I lift it I have to close the seacock.  For those times I forgot, I just do what I said.

Do you do this with the A/C unit running or turned off?

Can't run the ac on D.C.

I'm referring to loosening the screws.

Black_Diamond

Is that garden hose coming off the A/C pump?  Looks like it. Someone way over applied the pipe dope too, teflon tape is the preferred for plastic threaded pipe fittings. 

reneechris14

The white hose is on a barb fitting it not come off unless you cut it.but If you loosen the hose clamps it will let you spin the black plastic piece off.and then some Teflon tape when you reassemble. Do you here or feal the pump come on?1st.(it's running)ok,The pump is below the water line so close the seacock,clean the filter,put back on loose,open seacock fill filter and then tighen.should be enough to prime pump.

bella-vita

It would have to be running u have to get the air out the pump

MajorAppeal

reneechris14 said:

The white hose is on a barb fitting it not come off unless you cut it.but If you loosen the hose clamps it will let you spin the black plastic piece off.and then some Teflon tape when you reassemble. Do you here or feal the pump come on?1st.(it's running)ok,The pump is below the water line so close the seacock,clean the filter,put back on loose,open seacock fill filter and then tighen.should be enough to prime pump.

The pump is getting warm while it's running. I suspect it's running, it's very quiet. The noise from the air blower is much more audible. I'll try the responses this week.

Dream_Inn

MajorAppeal said:

Dream_Inn said:

bella is correct.  or, you could also loosen just a bit those 3 screws holding the black plastic onto the pump and with the valve open it will make hiss until the air is out, and then water, just tighten back up.  I keep mine on a lift, so each time I lift it I have to close the seacock.  For those times I forgot, I just do what I said.

Do you do this with the A/C unit running or turned off?

I do this with it off, but boat in water.

Liberty44140

Are you showing any errors on the thermostat? When I started mine up without priming and didn't prime it fast enough it showed an error code on the screen which according to the manual meant that it overheated due to no water. It was something like HTE. Once I got water through it all was well. I would definitely get that hose off even if you have to cut. You should be able to get that hose on and off after loosening those two hose clamps. It shouldn't be super easy, but it shouldn't be impossible either. 

davidbrooks

Had to do this this past weekend.  The steps I took was to 1) make sure the seacock was open under the aft bed and then turn on the AC.  You should be able to put your hand on the raw water pump and feel it running and pumping water.  Then went up to the bow and noticed the condenser coils were icing up.  This meant water was running through them.  Water goes in the bottom and out the top of the condenser. 2) Follow the hose to the hull.  Mine is Starboard.  Unclamped it from the hull and gave it a few good sucks.  (no comment).  Successfully didn't get any antifreeze in my mouth.  Soon as water made its way to the hose I popped it back on the hull fitting and tighten it up.  Worked like a champ all weekend. 

frodo13056

I just use a clean manual oil extractor to create a vacuum on the discharge side of the compressor unit - this pulls water into the line /  compressor unit when the seacock is open. The manual extractors I have are something like this:
http://www.tooltopia.com/mityvac-7400.aspx?utm_source=google&utm_medium=cpc&utm_campaign=paid_search_google_pla&scid=scplpMIT7400&sc_intid=MIT7400&gclid=CjwKEAjw8OLGBRCklJalqKHzjQ0SJACP4BHrqVe3dXqP_VFfnmLJIfZ_Nn3vnM3lUAbaapSx8h0R1RoCEmPw_wcB

I went to Menards and bought a bunch of different diameter / wall thickness clear flexible tubing and made adapters for the extractors so that I can use them for pretty much anything where I need to draw a vacuum:
 https://www.menards.com/main/plumbing/rough-plumbing/pipe-tubing-hoses-fittings-accessories/hoses-tubing/vinyl-tubing/c-8584.htm

I use the manual extractors to change the oil in my Rinker 320 engines and generator in the fall and clean them up when done. I also use the extractor to draw antifreeze through the AC unit by placing a hose into a gallon of antifreeze and drawing the vacuum with the extractor (you have to disconnect the suction and discharge of the AC unit hoses). I use the same method in the spring to draw lake water into the AC system to ensure I have a good prime.

Dream_Inn

Well, David makes a good point.  I've had the condenser clog with just the smallest amount of sand/dirt.  It took a lot of blowing (no comments) and finally a small amount came out the input hose to the condenser.