Quote Originally Posted by NoNickName View Post
That's how Carel is doing things.
Siemens stepper motor controlled valves have a return spring.
Hi NoNickName

didn't know that, but it might explain why the airedale chillers have nice shinny stainless expansion valves on the newer models and they say the expansion valve problem has been fixed (must be a siemens valves with airedales name on it).

Kind Regards Andy