Desuperheater simulation problem in fluent
 

Dear all.

I am doing very simple simulation of desuperheater using fluent.
I have inlet with temperature of 122 Celsius, k-omega with SST.
And changed solution controls as follow: pressure: 0.1 & momentum: 0.5.
it solves some iteration then shows AMG solver error with temperature limitation. for the moment reached minimum and maximum gave 10000 Celsius.
Coudl you anyone give a guide line to solve this problem please.

Thanks!!!!!!