Did changing the iteration from 100 to 1000 solved the problem for you? If so, how did you change it? I am getting similar warnings in my Ice tank simulation
************* ** Warning ** Detailed Ice Storage system [TES TANK] discharging maximum iteration limit exceeded occurrence continues.
************* ** ~~~ ** This error occurred 39906 total times;
************* ** ~~~ ** during Warmup 0 times;
************* ** ~~~ ** during Sizing 0 times.