Randy,
I agree that you should have someone look at your genset to determine why it is shutting down.
There used to be a really informative FP Owners Forum with lots of tips, etc. but it seems to have moved to a new site. In Google search for "Fischer Panda Owners Forum" to check it out. Not sure if the previous info. in the old site transferred over though. In my reading of the old site, below are my summarized notes:
1. Call FP Customer Support in Florida at 1-954-462-2800. I have found them to be very helpful. My notes show two guys are great: Jeff Till or Jim Gagnon. Jeff's e-mail is "JTill@fischerpanda.com"
2. Use only Diesel oil (not oil for gas engines). My FP takes only 1.75 quarts as I recall.
3. I was told by FP that the relay fuses wear out and require changing. Buy spares and don't be surprised to have to change them every other year. These are the black square ones with easy access once you take the covers off. They are interchangeable (ask me how I know!). No big deal if you have spares on board. The PN for these relays is HE66134. You can purchase them off the FP website. Not cheap but you need them!
4. Run your genset often! Worst thing you can do is let it sit for long durations. I don't run mine enough either but I try my best.
5. Be extra careful to open the genset seacock prior to starting and closing it after it's off. One mistake and you'll need a new impeller (tough job) or will jam salt water up into the genset while planing if the genset is off. Many make this mistake and learn from it.
6. Prior to shutting the genset down, turn off all AC items to allow the coils to cool. Do this for 3-5 minutes before every shut down.
7. Think also about changing your Racor Fuel filter. If it is clogged, this could be why the genset is shutting down. Worth a check... The Racor Filter I used to replace mine is PN "R11T".
8. Lastly, I have learned not to "stress" my genset by only running ONE major AC appliance at a time. For example, if I have the hot water heater on and I want to use the microwave, I turn off the water heater on the AC panel for the few minutes I operate the microwave. Then, I turn the water heater back on. I basically watch the Amps on the AC panel and try to keep it at or below 25 amps. Your boat's AC wiring is rated to 30 amps so why stress it and run the risk of a fire or blown fuses and circuit breakers? Very easy to turn things on and off so as to make life easy on the genset. I call this "managing the load" on the genset. For me the major items include the following which operate ONE at a time: Water Heater, Microwave, Stove, portable electric heater, hair dryer, and the boat's reverse cycle Air Conditioner.
Good luck and I hope you find these suggestions helpful.
