Compressor overheating is usually caused from high compression ratios. High compression ratios can be caused from a combination of high condensing pressures (temperatures) and low suction (evaporating) pressures.

The evaporator is a major component in the refrigeration system, and an efficient evaporator plays a key role in saving energy. 

We are going to look at issues related to a partially restricted filter/drier. For this purpose I have included a service checklist as well as a number of illustrations.

Compressor overheating is often referred to as the HVACR industry’s most serious field problem.