Hi,
I’m getting sometimes this "Chain 1 Exception: Exception: algebra_solver: the norm of the algebraic function is 24.6913 but should be lower than the function tolerance: 1e06. Consider decreasing the relative tolerance and increasing max_num_steps. " with the algebra solver.
I couldn’t find much info about the optional arguments in the documentation, what are the defaults?

rel_tol
: relative tolerance for the algebraic solver, typereal
, data only, 
function_tol
: function tolerance for the algebraic solver, typereal
, data only, 
max_num_steps
: maximum number of steps to take in the algebraic solver, typeint
, data only.
Also what’s the difference between the two “tol” arguments.
And something else, two strange things:
 newton method doesn’t seem to work for me, while the default does.
 does it make sense that with a “good” guess the model gets stuck in the initial values more often than just guessing 0? By good I mean that sometimes I can get the analytical solution of the equation and I plug it as guess, and sometimes I can’t (because of numerical issues). I’m a bit hesitant of pasting the monstrosity of my model and scare away answers :)
Bruno
(BTW, shouldn’t there be a tag for the solvers?)