I have a problem with the CIR A on the 30RBA unit, the EXV remains open 100% all the time, there is adequate refrigerant in the system, checked all the transducers and thermistors and found to be OK. Tested the EXV on test mode and it appears to be working OK on both 0% and 100%. As of now I dont have any answers to the problem. Appreciate if someone can give me some indicators for troubleshooting.