What is the primary purpose of the low-pressure control in a heat ...

[PhilipSeeMore]

What is the primary purpose of the low-pressure control in a heat pump?
 
  a. Cycles compressor off on low loads
  b. Prevents refrigerant floodback
  c. Protects against loss of charge
  d. Prevents outdoor coil icing

Question 2

Which of the following statements is correct?
 
  a. Electronic defrost controls use logic to determine the need for a defrost cycle.
  b. Mechanical defrost controls are significantly cheaper than electronic models.
  c. A defrost cycle starts as soon as the coil temperature is below the setpoint.
  d. Mechanical defrost controls base defrost cycles on time alone.

[srodz]

Answer to Question 1

c

Answer to Question 2

a