Hi, Everyone. I faced some problems of my project.
I installed a set of Compressor and Condenser c/w 2 units of different model of unit coolers for 2 units of coldroom. Below show the model of items that installed:

Compressor: Bitzer 4EC-6.2Y-BJ Semi Hermetic Compressor
Eden EFGP 0343.51 RB G4 Condenser 34.3Kw
Eden FEME 0450 G4 Unit Cooler 4.50Kw @ 6KTD c/w 3x300mm fan set (Temperature Require -2'c)
Eden FEM 0492 G4 Unit Cooler 4.92 Kw @ 8KTD c/w 1x300mm fan set (Temperature Require 3'c)

The problems that i faced are when the Coldroom A reached -2'c, Coldroom B's unit cooler will ice up.
May I know what's wrong of the unit cooler happened? Can any one could help and assist to solve this situation.

Thanks and Best Regards.