PTAC and window-unit air conditioners often use rotary compressors, which are effective but susceptible to failure due to high head pressure. What is the most common cause of high head pressure in these units?
A) Dirty evaporator
B) Metering device failure
C) Incorrect charge
D) Dirty condenser
D
Trades & Technology
You might also like to view...
As the evaporator load increases, an automatic expansion valve will ____________________ to maintain the suction pressure at the set point.
Fill in the blank(s) with the appropriate word(s).
Trades & Technology
"Organically produced foods" have now been defined by the ________
a. NRCS c. USDA b. FDA d. EPA
Trades & Technology
Temperatures lower than 86°F during the incubation of alligator eggs will produce all females.
Answer the following statement true (T) or false (F)
Trades & Technology
When two Ethernet devices attempt to communicate at the same time, an event called a collision results
Indicate whether the statement is true or false
Trades & Technology