[C320-list] ProMariner Problem

[jjemail at comcast.net]

Many of you have had problems with your ProMariner 20-3 chargers, so hopefully someone can advise me about these symptoms. 

The fan occasionally cycles on and off in 10 second intervals for 3 or 4 cycles, then it either shuts off or runs normally. Also, the amperage guage on the charger frequently goes into spasms where it bounces rapidly back and forth between 0 and full-scale for several minutes. When it does this there are rapid changes in the pitch of the soft buzzing noise that comes from the unit. The fan short-cycling and the guage spasms don't usually coincide. I'm guessing that the charger is about to self-destruct.

 Has anyone else encountered any of these symptoms?  I tried calling ProMariner but had to leave a message and they didn't call back.

Also, what did you purchase as a replacement? My initial thought is that a Xantrex charger and Link 2000 charge controller would be good choices.  

Thanks in advance.

JeffC