Air conditioner error code P1 R5. What is this?

JV where do u keep the boat. We used to be in merrick now were in Riverhead .

Rob

I own a dock property (50’ of bulkhead) on the East side of the Venice Canal in Lindenhurst and keep it there.
 
...throw some bromine tabs in the strainer basket for 2 weeks then flush again with water ...
Rob

Rob:

Do you only do this when you have problems or do you run with them all season? I am over in Wantagh and always get the jelly growths that look like eggs clogging the strainer.

-Kevin
 
If you are in salt water put a couple of pieces of copper tubing in the strainer basket. I was tipped off to this a couple of years ago and it has completely stopped the growth.
 
Rob:

Do you only do this when you have problems or do you run with them all season? I am over in Wantagh and always get the jelly growths that look like eggs clogging the strainer.

-Kevin
Kev,
I do it once the water warms up . Even with the south bay strainers id end up with all kinds stuff. In riverhead its even worse as its brackish water . Tabs do a great job.... But I still suck up much in shallows So flushing from the discharge of the pump fwd is great.

Rob
 
Kev,
I do it once the water warms up . Even with the south bay strainers id end up with all kinds stuff. In riverhead its even worse as its brackish water . Tabs do a great job.... But I still suck up much in shallows So flushing from the discharge of the pump fwd is great.

Rob

Rob:

Thanks, Tabs are in now and I will see how they do. I also have the south bay strainers and even tried with copper fittings in the basket but I would fill up with growth in just a week or two. Lets see if this clears the system as I seem to have some growth in there too. I might try flushing the lines if I get a chance this week - last year I hit the system with the phosphoric acid treatment too. Just looking for something to stay ahead of this. Funny thing is I seem to be the exception on my dock.

-Kevin
 
The water distribution manifold coming off of my AC pump feeding the two AC lines looks to be copper.
I don’t know if it’s original or if it was installed by the previous owner.
I’m giving some thought to tying in some copper valves somehow to isolate one unit from the other for flushing . It could also make winterizing it even easier.
Space is tight by the pump and lines in the bilge, but I’ve got plenty of room to put a shut off valve in the inlet line just before each AC unit.
Kevin, I’ve got a Groco AC strainer and the the flush cap for it. Let me know if you want to borrow it.
It makes flushing with fresh water easy. Better than the one I had rigged up with parts from Home Depot because it seals.
I clean the basket and flush with fresh water frequently. My forward unit has a lazy flow and until I figure out why I figure flushing is a good thing. Hoping the bromine will help, but starting to think it may be a lazy pump because I get a good flow with the fresh water dock hose.
 
The water distribution manifold coming off of my AC pump feeding the two AC lines looks to be copper.
I don’t know if it’s original or if it was installed by the previous owner.
I’m giving some thought to tying in some copper valves somehow to isolate one unit from the other for flushing . It could also make winterizing it even easier.
Space is tight by the pump and lines in the bilge, but I’ve got plenty of room to put a shut off valve in the inlet line just before each AC unit.
Kevin, I’ve got a Groco AC strainer and the the flush cap for it. Let me know if you want to borrow it.
It makes flushing with fresh water easy. Better than the one I had rigged up with parts from Home Depot because it seals.
I clean the basket and flush with fresh water frequently. My forward unit has a lazy flow and until I figure out why I figure flushing is a good thing. Hoping the bromine will help, but starting to think it may be a lazy pump because I get a good flow with the fresh water dock hose.
Have you tried flushing those coolant supply lines from the copper tubes directly with a hose?
My system sounds similar and I simply removed the lines from the copper tubes. I then used a garden hose adapter barb into the water coolant line (the one on the port was for my front cabin system). Hook up a hose to the engine room wash down gate valve and flush the individual line.
If you've tried that already, sorry for the repeat.
James
 
I moved the manifold and pump off the bulk head to just in front of the port side rudder. ITs all mounted on a piece of starboard. I flush like james said right at the manifold , taking each hose off on at a time. The barb fitting on our sealand charcoal head filter fits perfectly … lol . just saying .

Rob
 
Does the original poster, Jeffery R. Dugin have any more to add? Were you able to fix the problem?
 
Have you tried flushing those coolant supply lines from the copper tubes directly with a hose?
My system sounds similar and I simply removed the lines from the copper tubes. I then used a garden hose adapter barb into the water coolant line (the one on the port was for my front cabin system). Hook up a hose to the engine room wash down gate valve and flush the individual line.
If you've tried that already, sorry for the repeat.
James

I’ve removed the lines for each unit from the manifold on the pump, inserted barbs, and flushed them with fresh water from that point through the system and out the discharge with fresh water, and I also back flushed each unit by isolating it (vice grip wrapped in tape blocking one of the units), removing the discharge line from it and temporarily replacing it with a short length of 5/8” ID hose double clamped with barb on other end and running fresh water through the unit back out the through hull.
There doesn’t seem to be any restrictions in any of the lines or either unit. Fresh water runs strong in either direction. Yet when the system is running the forward unit seems to have about half the flow out of the side of the boat as the aft unit does.
That’s why I’m starting to think that the pump may be a little weak.
The unit is running and cooling with no HI PS code now, but the flow,just doesn’t look strong enough to me.
I may try FrankW’s acid flush method next to see if it gets better.
 
I moved the manifold and pump off the bulk head to just in front of the port side rudder. ITs all mounted on a piece of starboard. I flush like james said right at the manifold , taking each hose off on at a time. The barb fitting on our sealand charcoal head filter fits perfectly … lol . just saying .

Rob

Rob, I don’t have the same kind of room in that area as your boat. I’m thinking of just putting a shut off valve in the supply line for each unit so I can shut it off and isolate it.
If I did that:
When I want to flush an individual unit I can just install my flush cap on the strainer, shut off the supply to one unit, flush the other individually with the full force of the fresh water hose, open that valve, close the valve for the already flushed unit and do the other one. There would be no more need to remove lines from the manifold.
 
U can absolutely install two ball valves to force more water to the fwd ac unit.

Rob
So far it’s still running and cooling great with no HI PS code so I’m going to give it a little more time with the Bromine, then do another flush and see what happens. If the flow still doesn’t look as strong as the aft unit I’m probably going to give it the acid flush that FrankW outlined just to rule out scale in the 16 year old lines.
Hopefully I’m not getting too anal about it and it’s not just a case of the smaller unit being that much further away from the pump just naturally gets less flow.
Most people would probably leave it alone since it’s working well, but I’d feel better if the flow was the same from both units.
 
So far it’s still running and cooling great with no HI PS code so I’m going to give it a little more time with the Bromine, then do another flush and see what happens. If the flow still doesn’t look as strong as the aft unit I’m probably going to give it the acid flush that FrankW outlined just to rule out scale in the 16 year old lines.
Hopefully I’m not getting too anal about it and it’s not just a case of the smaller unit being that much further away from the pump just naturally gets less flow.
Most people would probably leave it alone since it’s working well, but I’d feel better if the flow was the same from both units.

Yep, trust your gut.
 
the fwd unit is further , and water will go path least resistance.... So see how it goes. U can also feel the water exiting the boat from both ac units and see if the fwd is warmer... that's a good tell as well .

Rob
 

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