[EnergyPlus_Support] dx cooling coil

["zhaicq98" <chaoqinz@xxxxxxxxxxxxxx>]

I have a DX VAV system, similiar to the example file 
5ZoneAutoDXVAV.idf. I also have an enthalpy wheel and a desiccant 
wheel on the outside air loop. When I put the enthalpy wheel after 
the desiccant wheel, the file works well. But when I make the air go 
through enthalpy wheel before it enters into desiccant wheel, an 
error messager comes up, which says "Iteration limit exceeded 
calculating DX unit compressor speedDX COOLING COIL SYSTEM 1". In 
addition, it happens in May. It runs well during the first 4 months. 
I do not know what is wrong with the coil. What I guess is that the 
coil can not handle such hot and dry air. But I am not sure, and also 
I do not know what I can do to correct it. By the way, I use autosize 
for the DX coil.  

Thanks,
Chaoqin



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