I met a Bev-Air yesterday that was sick as a dog.
The complaint was no cooling. We pluged er in and found no dif in temp on the lines of the unit. No cooling iside the box. This was an MT12. And it was painted like a cow. White with black patterns all over it.
The amps were way down. So we brazed on saddle valves and attached gages.
The head would rise and fall like 50 psig. The suction started out like thirty then droped to 2 psig.
134A. Less than a year in the field.