I have been having an "E2" error after running 1 to 2 hours on my Webasto FCF Air Conditioner. Looked up the error code on the web (did not get a user's manual) and found that it is a freeze protection error. Called the manufacture and was told it is probably an air flow restriction problem. Also the web suggested it could be low on Freon or what ever is currently used.
Tried to get a boat HVAC person to check out the system, however the only technicians available are in the Annapolis area about 50 miles away and they are too busy to travel. I really did not want to dive into the far end of the cave on my 2014 RT25SC, but today I went spelunking. After removal of the back wall of the cave, there it was the A/C unit. I started looking around an found that the filter in front of the coils looked odd. I touched what I thought was the filter and found it was plastic and behind the plastic was some writing. Upon closer inspection the plastic was a bag that contained the user's guide for the A/C unit carefully inserted into the same clips that held the filter.
So my A/C problem was the factory did not remove the user's manual prior to installing the unit in the boat. The user's manual covered up a significant area of the coils causing my problem. After removal of the manual the unit's air flow has increased significantly cooling the boat faster and the error has not returned.
If you have an A/C unit you may want to do an inspection of that unit, especially if you did not receive a manual with the boat.
Tried to get a boat HVAC person to check out the system, however the only technicians available are in the Annapolis area about 50 miles away and they are too busy to travel. I really did not want to dive into the far end of the cave on my 2014 RT25SC, but today I went spelunking. After removal of the back wall of the cave, there it was the A/C unit. I started looking around an found that the filter in front of the coils looked odd. I touched what I thought was the filter and found it was plastic and behind the plastic was some writing. Upon closer inspection the plastic was a bag that contained the user's guide for the A/C unit carefully inserted into the same clips that held the filter.
So my A/C problem was the factory did not remove the user's manual prior to installing the unit in the boat. The user's manual covered up a significant area of the coils causing my problem. After removal of the manual the unit's air flow has increased significantly cooling the boat faster and the error has not returned.
If you have an A/C unit you may want to do an inspection of that unit, especially if you did not receive a manual with the boat.