Refrigerant Overcharge
Loose TXV bulb
Refrigerant Undercharge
High Evaporator Airflow
Restriction (Liquid Drier)
refrigerant blend vapour charged
Low Evaporator Airflow
Cross oil contamination
Fouled or dirty condenser
Non-condensables
Tight compressor (drag/seizing)
mixed refrigerants
Inefficient compressor
refrigerant blend large leak
TXV bulb charge lost
Low condensing ambient
Electrical phase imbalance (3 phase)
HIGHER THAN NORMAL

HEAD
PRESSURE

DISCHARGE
TEMPERATURE

SUCTION
PRESSURE
LOWER THAN NORMAL
HIGHER THAN NORMAL

SUPERHEAT
(TXV)

SUBCOOLING
(CONDENSER)

AMPERAGE
(CONDENSER)
LOWER THAN NORMAL

     

Input Access Code