[TRNSYS-users] Type 2b problem

[Karel Fore]

Dear TRNSYS-users,

I have a problem in my simulation with a Type 2b Solver0 (succesive substitution) control strategy:

Upper input temperature = variable inside temperature of my building
Lower input temperature = 0 (not variable)
Monituring temperature = 60 (not variable)
input control function = output control function
Upper dead band dT = 22
Lower dead band dT = 21

So, when my buildingtemperature starts climbing over 22, the type 2b output =1
When it falls down lower than 21, output = 0

Problem= when buildingtemperature is dropping and reaches values e.g. 20.95; 20.89; 20.93; 20.99; 20.95
the solver doesn't give me 1 or 0 but values like 0.93; 0.95;...

Does anyone know how to solve this problem? ( when the building temperature is 20.99, I want the solver to give me the value 0)

Thanks a lot in advance,

Karel