A/C HPF Code, resolved!!!

aholst1

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exMember
Joined
Apr 20, 2006
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20936
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446
After the advice recieved, I went to backflush my system. I removed the discharge hose from the thru-hull to inspect the line and found what looked like mulch in the line. Not wanting to force this stuff back through the system, I removed the discharge hose from the a/c unit. Found a 4" blockage which again looked like mulch. Re-attached, opened the seacock and fired up the system. Low and behold, water discharge via the thru-hull and ice cold air!!! While I'm not looking a gift horse in the mouth, I can't figger out how this stuff got past the strainer, thru the pump, thru the heat exchanger and ended up blocking the discharge hose about 4" from the the thru-hull. BTW, my 7 year Calpump is functioning well (probably just jinxed myself)
 
It could be grass that went thru the system one blade at a time and got stuck or wedged
in a curve or there might be some kind of burr in the hose that caught one piece and it
snow balled from there. You never know about things that you cannot see. Glad you are back
on track.
 
Strainers are good, but not perfect; crud can pass. Glad you found it.
 
I have seen when a boats sit wasps or spyders like above the water discharge lines. Then after they abandon the nest it acts like a filter catching any crud that would get past the sea strainer like the crud in brackash water and polluted water.
Bill
 
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