To control ice build-up on a heat pump outdoor coil in the heating cycle, a ____ is attached to a large diaphragm.
A) toggle switch
B) micro-switch
C) push button switch
D) sail switch

Question

Quizplus · Accepted Answer

A micro-switch is used in conjunction with a large diaphragm to control ice build-up on a heat pump's outdoor coil during the heating cycle. This setup allows for precise control based on pressure changes, which can indicate ice formation.

To Control Ice Build-Up on a Heat Pump Outdoor Coil