Possible Airlock in AC seaflow line?

Hey folks, I pulled my R-25 out for service and put it back in the water.

Now, my Webasto AC isn't pulling in water. With the seacock open, I've tried unscrewing the strainer bucket while the AC pump is on, but water still isn't getting to the AC unit, resulting in an E1 "seaflow" error. My next step is to back flush from the thru-hull on the AC outlet.

Anybody run into this before and have a solution?

Yes. It’s not self priming. Close the seacock and unscrew the strainer a bit. Then back fill from the AC exhaust. Tighten strainer and open the seacock back up. Then start up AC.

This is the way.... Worked perfectly. Surprisingly....lots of air.

BTVTug said:

This is the way.... Worked perfectly. Surprisingly....lots of air.

Click to expand...

Also, try to remember to close the seacock before short hauling the boat. Traps the water in the line and keeps the system primed.

DMD3 said:

Also, try to remember to close the seacock before short hauling the boat. Traps the water in the line and keeps the system primed.

Click to expand...

The seacocks were closed. That's what was so puzzling.

To prime mine, as soon as the pump comes on, I quickly disconnect the line on the pump right where the water would be exiting the pump. Pull the line off the fitting for a second and water starts to flow out the pump. Then just stick the line back on and tighten. Just a little water spills into the bilge. I usually put a towel down first. I have to do this every time I clean my strainer. Also, I use a cordless ratchet to loosen the hose clamp and re-tighten it on the line .Makes it quick. Do this with the seacock open.