I spoke with Shaun at Xantrex today and they know about the design defect with the Truecharge2 chargers, and are working on a fix (probably a firmware upgrade). The problem is that the software
turns the fan off when in trickle mode. The temperature warning is set to come on at 50C and the fan temp sensor won't turn on the fan until the temp gets to 55-62C. The unit will shut down with a temp fault at 70C, which should never happen since the fan is running well before then. Remember, this is while the unit is in Trickle Mode, providing trickle charge to the batteries and DC power to the boat on demand up to it's rated capacity.
Shaun said they will probably have the fix in a couple of months, but they don't yet have the program for addressing the issue for current
owners (like warranty exchanges or repairs
, or whatever).
This is basically a nuisance indication, although it is accuratly indicating that the unit is getting warm. Once it goes into a different mode (charge, equalization
, etc.) the fan will run and the unit will cool down.
Just acquired a Truecharge2 40A on Tuesday and installed it yesterday only to discover this defect. Except for the nuisance, it appears to be functioning just fine after a rigorous setup and checkout, charging
all three banks. Guess I'll give the engineers at Xantrex an opportunity to correct their error and then see how good their customer service
is with getting these units modified. -Rick