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Compressor high pressure protection
May 29, 2012
7:16 pm
big country
New Member
Forum Posts: 1
Member Since:
May 29, 2012
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I have a Webasto FCF 5000 single system on a 32 foot express.  The system was installed new when I bought the boat 15 months ago.  The raw water pump is not new and ran with no issues last summer.  I have no idea how old the raw water pump is.  I am getting a E1 Compressor high pressure protection error after running the system for about 10-15 minutes.  I have checked the sea strainer and the boat was hauled this spring  Sea strainer and bottom are both fairly clean.  I am getting decent water flow out of the thru hull.  About the same as a water hose on medium and about the same as last summer when the system ran with no issues.

The raw water pump also seems to be over heating. When the system automatically shuts down the raw water pump is hot to the touch. I cannot find any manufacturer identification marks on the pump,  It is silver and is a sealed pump.  Since the AC system is only a year old and the boat is in VA beach, I am leaning toward replacing the pump before descaling.  After reading some of your articles here, acid does not sound like something I want to do myself.  I would like to replace the raw water pump, install some copper tubing in the sea strainer and see if that solves the problem.  If not, I will hire someone to come and de-scale.

I am looking at the March LC 2CP-MD pump.  The manual recommends a minimum of 160 GPH and this March pump is advertised at 300 GPH.

Is my logic sound? Any other ideas?  Lastly, the hoses from the pump to the unit are new.  The hoses from the strainer to the pump are not.  I also will replace all the old hoses. Thanks in advance.