I want to fit a fan speed controller to a freezer unit running on R404
Can a member advise and on the best way to achieve this....I am thinking of using a pressure stat.

What about the settings. If I take todays conditions into account........Ambient.........19 C. Head pressure with both condenser fans was around 150 psig. I think Im overcondensing.........Need to come up to around 200 psig I think