Zoin serveover display counter

Dont know if anyone has had the same problem but intermittently they system blocks causing the capillary to frost back passed the filter to the condenser which causes the bottom couple of rows on the condenser to sweat. It has recently had a new compressor and filter drier,evacuated and recharged. It can be switched off for a while then switched back on and it works for a while. Any ideas guys.

Refrigerant type?
Oil type?
Why was the compressor changed?
Oil acid level checked at compressor change?

Hi Brian. R134a. Compressor was noisy. Oil poe. No burnout.oil ok.

R134a is known to block capillaries due to oil floccing