Webasto AC unit E3 code

[KKRCRACE]

My wife and I are getting ready to go on a 8 day cruise and the Webasto AC control panel shows an E3 code and the unit is not blowing cold air. E3 is a compressor low pressure protection. Does anyone have any suggestions?
KKRCRACE

 

[CruisingElvinRay]

Good water flow from the pump?


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[KKRCRACE]

Extremely good water flow. That was my problem with an E2 code which was to high pressure. Flushed system good and has been working fine for two months.
KKRCRACE

 

[Matty]

Does the compressor come on at all? I believe the pump comes on first then about a minute later compressor should come on.
I had a lot of issues with mine. A couple things to try.
Try turning it to heat and see if it produces heat. There is a reversing valve that may be stuck. The other thing I did was unplug the thermostat control (wire on back of control) , wait 10 seconds and plug it back in. It would clear the code and work .
My issues eventually got worse and the unit had to be replaced.
They said the coolant leaked out.

I might be wrong but i believe the high/low pressure codes are referring to the refrigerant pressure not water pressure.