No steady state, though the sum of residuals is close to zero

Dear all,

I am trying a simplified version of my model as the codes attached. I receive the error that the sum of residuals is preventing from finding a steady-state, although the value is almost zero. How can I get this steady state?
ns_simple.mod (2.0 KB)

Hi, use resid(1), you will see that your steady-state is wrong. Please check your calculations again.