Norsup 7026965 Manuel D'installation Et D'instructions page 41

6.APPENDIX
AT: Ambient temperature
COMP: Compressor
CT: Coil temperature
EEV: Electronic expansion valve
ET: Exhaust temperature
FM: Fan motor
FS: Flow switch
HP: High pressure protection
PM: Phase monitor
IT: Inlet water temperature
K2: Relay of pump
LP: Low pressure protection
OT: Outlet water temperature
SUT: Suction temperature
4V: 4way valve