low stage?

[cakabo28]

hı everybody,ı have a climatic test room,ı have faced with a problem,the appliance indicates an error "low stage compresor thermal protectin"
ı know thermal protection but what does low stage mean? do you know anybody?
please help me?

[Peter_1]

Second stage , the opposite oft he high stage, the one in the final stage, the cold one... in fact the very cold one, the one with the unusual gass, the one mostly with the expansion tank, the one mostly fitted with a capillary ...

[cakabo28]

thanks peter...