A walk-in with TEV has the following conditions:
Subcooling is 0° LOW
Superheat is 25° HIGH
Which of the following could cause this condition?
A. Overcharge
B. Undercharge
C. Dirty condenser
D. Dirty or iced evaporator
Answer (2)
The condition of 0° LOW subcooling and 25° HIGH superheat could likely be caused by an undercharge of refrigerant. This lack of refrigerant leads to insufficient heat absorption, causing the observed high superheat. Other potential causes like a dirty evaporator or condenser are less likely in this context.
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The low subcooling and high superheat in the TEV condition may be caused by an undercharge of refrigerant. This insufficient amount of refrigerant leads to inadequate heat absorption within the evaporator. Both dirty components and overcharging can also contribute to similar symptoms but are less likely than undercharging. ;
